Facet Nation: A Gemmology Podcast

41. Interview: Arya Akhavan returns! Growing Exotic and Novel Lab Sapphires

Send us Fan Mail Arya Akhavan returns! To reveal the secrets he couldn't disclose last time. Arya has been growing sapphires! And not just any sapphires, every colour of sapphire you can imagine. A gemologist and scientist, Arya shares groundbreaking insights into synthetic gemstone production, including sapphire growth, colour manipulation, and future innovations. Discover how science and passion are transforming the gem industry and what it means for collectors, faceters and jewellers alike. Get involved by joining 'The Gemstone Lab' kickstarter here: https://www.kickstarter.com/projects/canadacrystallabs/the-gemstone-lab-growing-never-before-seen-lab-sapphires Groundbreaking sapphire growth techniques Chemical processes in gemstone creation The role of computer modeling in gemmology Market implications of synthetic versus natural gems Innovations in gemstone colour and treatments Challenges in sourcing synthetic materials Future projects in gemstone research The impact of technology on gem cutting and design sound bites "We want to do this scientifically, rigorously." "Some synthetics are more rare than natural gems." "Market perceptions have diverged completely." Chapters 00:00 Introduction to Arya Akhavan and his work 02:54 Chemical processes in sapphire creation 06:18 Modeling and reverse engineering natural sapphires 08:34 Market trends and consumer preferences for synthetics 12:20 Industrial applications of synthetic gemstones 17:46 Market perception and the future of synthetic gems 22:37 Unique features of synthetic gemstones and market demand 28:43 Market diversification and consumer behavior 34:14 The evolution of synthetic gemstone marketing 43:56 Research and development in gemstone science 50:19 Current progress and future plans for gemstone synthesis 54:07 Closing thoughts and upcoming projects synthetic gemstones, sapphire growth, gemmology, gemology, gemstone science, lab-grown gems, gemstone colour, gemstone innovation, gem industry, gemstone research, gem cutting, faceting, lapidary, kickstarter, coloured gemstones Support the show

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40. Season 2: Garnet Part One

Send us Fan Mail Hello and welcome back to Season 2 of Facet Nation: A Gemmology Podcast In this episode, we explore the fascinating world of garnets, their varieties, history, and gemmological properties, revealing insights that will deepen your understanding of these captivating gemstones. key topics Garnet varieties and their chemical compositions Historical significance and trade of garnets Gemmological properties and identification techniques The spectrum of garnet colours and their causes Hybrid garnet varieties and their market value The importance of locality and deposit sources Chemical formulas and systems of garnet classification Inclusions and phenomena in garnet stones The story behind the names and trade names of garnets sound bites "Most garnets you see are that common brownish red." "The Ugrandite series has calcium fixed and Y variable." "Garnet spectrum goes thick, thin, thick, thin." Chapters 00:00 Introduction to Garnets and Episode Overview 02:01 Common Misconceptions About Garnet Colours 04:08 The Diversity of Garnet Varieties and Their Names 05:32 Historical Trade and Significance of Garnets 07:00 Chemical Foundations of Garnet Classification 09:06 The Pyrope and Almandine Series Explained 11:02 Understanding Garnet Spectra and Colour Variations 12:52 The Rich History of Garnet Use in Jewellery 15:10 The Discovery and Naming of Rhodolite Garnet 17:00 Identifying and Differentiating Garnet Types 18:58 Inclusions, Phenomena, and Cutting Challenges 21:00 Localities and Market Trends for Garnets 23:00 The Fascinating World of Pyrope and Spessartine Garnets 25:08 The Unique Colours and Market Value of Spessartine 26:54 The Story of Malaya Garnet and Its Cultural Significance 29:02 Summary and Final Thoughts on Garnet Diversity garnets, gemstone varieties, gemmology, almandine, pyrope, spessartine, Ugrandite, gem deposits, gemstone history, bohemian garnets, jewellery, gems, science, learning, education, study Support the show

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39. Season 2 Preview and Summer Catch Up

Send us Fan Mail In this mini episode, Simon shares his summer adventures including gem mining in Oregon, visiting the Spectrum Sunstone Mine, and participating in gemmology events. Lucinda discusses her new gemmology brand, TikTok presence, and recent travels, highlighting the vibrant gem community and upcoming events. Gem mining in Oregon Spectrum Sunstone Mine visit Gemmology events and community outreach Lucinda's new gemmology brand and TikTok presence Travel stories and gem history insights sound bites "Met some amazing people in Oregon" "Spotted a cougar in the wild" "Check out my new gemmology brand, Cunning Folk" Chapters 00:00 Introduction and episode overview 02:09 Memorable encounters and wildlife in Oregon 03:00 Exploring Oregon’s history and hot springs 06:58 Meet George, the versatile genius 08:02 Sunstone mining and collecting experiences 09:43 Gem community events and upcoming gatherings 14:34 Lucinda’s gemmology brand and social media launch 15:26 Lucinda’s trip to California and museum highlights 16:18 Lucinda’s UK adventures and historical sites 17:37 Season updates and upcoming episodes gemmology, Oregon sunstone, gemstone mining, gem events, gem community, TikTok gemmology, Spectrum Sunstone Mine, gem education Support the show

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38. End of Season 1: Fashioning Part Two - Gemstone faceting techniques

Send us Fan Mail This episode explores the intricate process of diamond manufacturing, from designing and marking to shaping, faceting, and polishing. Hosted by gemmologists Simon and Lucinda, it offers detailed insights into cutting techniques, tools, and the science behind creating stunning gemstones. End of Season One. THANK YOU FOR LISTENING. We will be back, enjoy your summer key topics Diamond designing and marking Dividing and cleaving methods Shaping and faceting techniques Polishing and final finishing Tools and equipment used in gem cutting Mastering Diamond Cutting: From Rough to Brilliant The Art and Science of Gemstone Faceting sound bites "Only diamond can cut a diamond" "Lasers cut diamonds in twenty minutes" "Start with the pavilion, then the crown" Chapters 00:00 Introduction to Gemmology and Diamond Manufacturing 02:35 The Process of Cutting Diamonds 05:13 Dividing and Shaping Diamonds 08:03 Bruting and Faceting Diamonds 10:28 The Role of Technology in Diamond Cutting 13:26 Understanding Diamond Facets and Angles 15:46 Lapidary: The Art of Gemstone Cutting 18:48 Understanding Facet Diagrams 21:24 Dopping Techniques and Adhesives 24:49 The Faceting Process Begins 28:19 Grit Sequence and Polishing 32:31 Cutting the Crown Facets 36:58 Final Steps and Reflections 39:49 Looking Ahead: Future Plans and Wrap-Up resources Gemology Project - Facet Diagrams - https://gemologyproject.com Ultratech Gem Faceting Machines - https://ultratec.com Andrew Ian Brown's Gemstone Design Books - https://www.amazon.com/s?k=Andrew+Ian+Brown+gemstone+design Instagram - https://instagram.com/gemmology_si diamond manufacturing, gemmology, faceting, cutting techniques, gemstone design, diamond polishing, gemmology course, gemstone tools, gemmology education Support the show

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37. Gemstone Fashioning Part One: An Overview for Gemmology Study

Send us Fan Mail In this episode, Lucinda and Simon explore the fascinating world of gemstone cutting and fashioning, covering essential terminology, techniques, and historical insights crucial for gemologists and enthusiasts alike. key topics Gemstone cutting terminology Differences between lapidary and diamond manufacturing Factors influencing gemstone cut decisions Historical gem cutting techniques and innovations Practical tips for evaluating rough stones Gem Cutting Vocabulary Diamond Manufacturing Process Gemstone Cut Optimization Review gemstone terminology regularly Practice evaluating rough stones before cutting Explore historical gem cutting techniques Titles Mastering Gemstone Cutting: Techniques, History, and Industry Insights The Art and Science of Gem Cutting: A Comprehensive Guide sound bites "The old mine cut has a rich history." "Inlays and carvings add artistic value." "A break in gem cutting is coming soon." Chapters 00:00 Introduction to Gemmology and Cutting Gemstones 03:01 The Importance of Understanding Gemstone Cuts 05:43 Insights from Gem Cutting Experts 08:26 The Process of Fashioning Gemstones 11:09 Types of Gemstone Fashioning 13:58 Evaluating Rough Gemstones 16:37 Key Factors in Gemstone Cutting 19:13 Understanding Diamond Manufacture 21:58 Historical Perspectives on Gem Cutting 24:42 Modern Trends in Gem Cutting 27:24 Conclusion and Future of Gem Cutting 29:12 Understanding Diamond Cuts and Their History 32:29 The Anatomy of a Diamond: Key Features 34:51 Exploring Brilliant Cut Stones 36:42 Step Cuts vs. Brilliant Cuts: A Comparison 38:04 The Evolution of Rose Cuts and Mixed Cuts 40:32 Fantasy Cuts: The Art of Gemstone Cutting 41:35 Cabochons: The Gateway to Gem Cutting 44:25 Beads, Cameos, and Intaglios: Decorative Techniques 46:10 Carvings, Inlays, and Mosaics: Artistic Expressions The V&A Museum Gem Collection - https://www.vam.ac.uk/collections/gems UK Facet Cutters Guild - https://ukfcg.org/ guest links Instagram - https://instagram.com/facetnationgemmology Email - mailto:facetnation@facetnation.co.uk gemmology, gemstone cutting, gem fashioning, gemmology exam, gem cutter, gemstone shapes, diamond manufacturing, gemmology history, gemstone grading, jewellery industry Support the show

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36. Interview: Michelle Mai - Cutting and Designing Gemstones

Send us Fan Mail Join Lucinda, Simon, and Michelle Mai as they explore the art and science of precision gem cutting. Discover techniques, tools, design principles, and the inspiring journey of a master gem cutter in this engaging episode. Precision gem cutting techniques Tools and machinery for faceting Design principles for gemstones Materials used in gem cutting The journey of a gem cutter Guest name Michelle Mai Titles Mastering Precision Gem Cutting: Techniques and Inspiration The Art and Science of Gem Faceting with Michelle Mai sound bites "Equipment is a huge barrier to entry" "Polishing quartz is challenging for me" "Start with cabochons to learn the basics" Chapters 00:00 Introduction to Precision Gem Cutting 08:09 Michelle's Journey into Gem Cutting 10:53 Understanding Gem Cutting Machinery 13:09 The Learning Curve in Gem Cutting 15:57 Design Principles in Gem Cutting 18:57 Challenges with Different Gem Materials 21:36 Creating Unique Gem Designs 24:36 The Role of Light in Gem Performance 27:00 Inspiration Behind Michelle's Designs 29:59 Favorite Designs and Techniques 32:31 Conclusion and Future Aspirations 35:41 Exploring Favourite Materials in Gem Cutting 37:53 Natural vs. Synthetic Gemstones: A Balanced Perspective 39:48 Navigating Risk and Responsibility in Gem Cutting 44:08 Advice for Aspiring Gem Cutters 51:04 Encouragement for Beginners in Lapidary Arts resources Amateur Gemstone Faceting Volume One by Tom Herbst - https://www.amazon.com/dp/B07V4V7V4X UK Facet Cutters Guild - https://www.ukfcg.org/ Gem Cut Studio - https://gemcutstudio.com/ Reddit r/shinypreciousgems - https://www.reddit.com/r/shinypreciousgems/ guest links Reddit - https://www.reddit.com/user/MichelleMai Instagram - https://www.instagram.com/michellemai/ gem cutting, gemmology, precision faceting, gemstone design, gem tools, gemstone materials, gem industry, gem education Support the show

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35. Tourmaline Part II: The King of Tourmaline...?

Send us Fan Mail In this episode of FacetNation, Simon and Lucinda delve into the fascinating world of tourmaline, particularly focusing on its significance in San Diego's gemstone history and the impact of the Dowager Empress Cixi on the pink tourmaline market. They explore the rise and fall of the tourmaline industry, the unique characteristics of the stone, and the methods used to identify it. The conversation is rich with historical anecdotes and insights into the gemmology field, making it an engaging listen for enthusiasts and newcomers alike. Also in this episode, Lucinda and Simon delve into the fascinating world of tourmaline, exploring its color variations, treatments, and the rise of Paraiba tourmaline as a highly sought-after gemstone. They discuss the geological origins of Paraiba tourmaline, its global appeal, and highlight famous examples, including the Ethereal Carolina Divine Paraiba. The episode concludes with a look at the stunning Liddicoat tourmaline slice, showcasing the beauty and complexity of this remarkable gemstone. Tourmaline is a significant gemstone with various types. San Diego has a rich history of gemstone mining. The Dowager Empress Cixi played a crucial role in popularising pink tourmaline. Zixi's love for pink tourmaline influenced the gemstone market. The decline of the tourmaline market followed Cixi's death. Testing tourmaline requires specific techniques due to its colour variations. Tourmaline can be mistaken for other gemstones. Historical context enhances the value of gemstones. Gemstones often have fascinating stories behind them. Understanding gemstone history can enrich appreciation for them. Some stones show two completely different colours. Watermelon tourmalines need both pleochroic responses listed. Tourmaline can be treated to enhance colour. Paraiba tourmaline is the most valuable type. The discovery of Paraiba tourmaline changed the market. Paraiba tourmaline's price skyrocketed due to rarity. Geological events created the conditions for tourmaline formation. Nigerian and Mozambican tourmalines are similar to Brazilian Paraiba. Famous tourmalines often have historical significance. The Liddicoat tourmaline slice is a stunning example of tourmaline beauty. The Allure of Tourmaline: A Gemstone Journey Unveiling San Diego's Gemstone Secrets The Legacy of the Dowager Empress Cixi Tourmaline: From Mine to Market "She banned foot binding." "It's a serious bottleneck." "It's called Heitorita." "It looks like stained glass." Chapters 00:00 Introduction to Tourmaline Part Two 02:30 Exploring San Diego's Gemstone History 05:57 The Dowager Empress Cixi and Pink Tourmaline 17:20 The Decline of the Tourmaline Market 18:22 Testing Tourmaline: Identification Techniques 22:01 Understanding Tourmaline's Colour Variations 25:01 The Treatment and Enhancement of Tourmaline 26:17 The Discovery of Paraiba Tourmaline 30:39 The Rise of Paraiba Tourmaline's Value 34:00 Geological Origins of Paraiba Tourmaline 38:25 The Global Appeal of Paraiba Tourmaline 39:05 Famous Paraiba Tourmalines and Their Significance 42:30 The Liddicoat Tourmaline Slice and Its Beauty tourmaline, gemstones, San Diego, Dowager Empress Cixi, gemmology, pink tourmaline, gemstone testing, history, gem market, California tourmaline, Paraiba tourmaline, gemstone treatment, colour variations, gemmology, gemstone value, geological origins, famous gemstones, Liddicoat tourmaline Support the show

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34. Gemstone Colour: Charge Transfer and Colour Centres

Send us Fan Mail Explore the fascinating science of gemstone colour, focusing on charge transfer mechanisms, the role of ions, and how treatments like heat affect gemstone hues. Perfect for gemmology enthusiasts and professionals alike. key topics Charge transfer in gemstones Colour centres and defects Effects of heat treatment on gemstone colour Titles The Science Behind Gemstone Colours: Charge Transfer Explained Unlocking the Secrets of Sapphire and Diamond Colours sound bites "Blue sapphire's colour is a football match of ions." "Charge transfer mechanisms reveal gemstone secrets." Chapters 00:00 Introduction to Colour in Gemmology 02:53 Understanding Charge Transfer in Gemstones 05:35 Oxygen to Metal Charge Transfer 08:28 Metal to Metal Charge Transfer: The Sapphire Story 10:58 Organic Molecular Electron Transition 16:22 Colour Centres in Diamonds 22:39 The Science of Synthetic Diamonds 25:27 Understanding Green Diamonds 27:44 The Mystery of Pink Diamonds 30:48 Exploring Colour Centers in Diamonds 35:28 The Future of Gemmology and Podcasting resources Gem-A Gemmology Course - https://gem-a.com/education Instagram - https://instagram.com/facetnationgemmology Email - mailto:facetnation@facetnation.co.uk gemmology, gemstone colour, charge transfer, sapphire, diamond, heat treatment, colour centres, spectroscopy, mineralogy Support the show

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33. Tourmaline Part One: Conquistadors and the party where everyone's invited

Send us Fan Mail Join us as we explore the fascinating world of tourmaline, its formation, varieties, and historical significance, with insights from gemmologists Lucinda and Simon. Tourmaline's chemical complexity and isomorphous series Formation of tourmaline in pegmatites and metamorphic rocks Varieties of tourmaline and their unique features Historical lore and the myth of pyroelectricity Testing and identifying tourmaline in gemmology Simon and Lucinda Titles The Hidden World of Tourmaline: From Conquistadors to Colourful Crystals Unlocking the Secrets of Tourmaline: Varieties, Formation, and Lore sound bites "Paraiba tourmalines glow like neon blue." "Rubellite is the most popular tourmaline." "Rubellite is a deep, moody red." Chapters 00:00 Introduction to Facet nation and Personal Updates 04:26 Shout Outs and Community Engagement 08:38 Exploring Tourmaline: A Gemstone Overview 12:59 The Chemistry and Characteristics of Tourmaline 17:28 Historical Significance and Unique Properties of Tourmaline 20:26 The Science Behind Tourmaline 24:17 Formation of Tourmaline 29:24 Varieties of Tourmaline 36:40 Favourite Tourmalines and Their Unique Qualities Instagram - https://instagram.com/facetnationgemmology tourmaline, gemstones, gemmology, mineral formation, jewellery, gem varieties, gemstone history, gem testing, gem inclusions Support the show

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32. Causes of Gemstone Colour: Dispersed Metal Ions

Send us Fan Mail This episode explores the science behind gemstone colours, focusing on dispersed metal ions, valency states, atomic environments, and their effects on colour and luminescence. Hosted by Lucinda and Simon, it combines scientific insights with personal reflections and industry tips. Dispersed metal ions and their role in gemstone colour Valency states of transition metals and their effects Atomic environment and its influence on gemstone hue Luminescence and fluorescence in gemstones Energy transfer and electron excitation in gemology Energy transfer in electrons Valency and atomic environment influence on colour Colour change effect in gemstones Review the valency states of transition metals in your gemstone collection Use a spectroscope to observe absorption bands and fluorescence Experiment with heating and irradiation to alter gemstone colors The Science of Gemstone Color: Dispersed Metal Ions and Atomic Environments Unlocking Gem Colors: Valency, Atomic Environment, and Light "Light as packets of energy excite electrons." "Atomic arrangement affects gemstone colour." "Chromium electrons jump, causing fluorescence." Chapters 00:00 Introduction to Colour in Gemmology 02:50 Philosophical Reflections on Energy and Colour 05:31 Understanding Ions and Their Role in Colour 08:03 The Impact of Valency State on Gemstone Colour 10:47 Atomic Environment and Colour Variations 13:30 The Role of Chromium in Colour Change 16:16 Luminescence and Its Connection to Colour 18:56 Fluorescence and Crystal Defects 21:25 Conclusion and Future Topics resources Gem-A (Gemological Association of Great Britain) - https://gem-a.com Spectroscope and Light Source Information - https://www.gemologyonline.com Simon and Lucinda's Instagram - https://www.instagram.com/facetnationgemmology/ gemmology, gemstone colour, dispersed metal ions, valency, atomic environment, luminescence, gemstone spectroscopy, Alexandrite, ruby, emerald Support the show

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31. Interview: Ian Dun FGAA FGSGA, Federal President Gemmological Association of Australia

Send us Fan Mail This week we are joined by Ian Dun, president of the Gemological Association of Australia. Discover insights into gemstone grading, Australian gemstones, and the future of gemological research. Of Particular interest is GAA's, world first, Opal Studies Course. Come and listen to find out all you need to know. key topics Gemological education and certification in Australia Australian gemstones: Opal, Sapphire, and more Advances in gemstone grading and identification guest name Ian Dun Titles Unlocking the Secrets of Gemmology with Ian Dun Australian Gemstones: A Deep Dive into Opal and More sound bites "Welcome to Facet Nation, a gemmology podcast." "Opal is misunderstood and polarizing." "Australian opal is my favourite gemstone." Chapters 00:00 Introduction to Facet Nation and Ian Dun 01:52 Ian Dun's Gem Story and Career Path 08:49 The Gemological Association of Australia: History and Courses 12:55 Diploma of Diamond Technology and Practical Grading 21:42 The Online Opal Course: Development and Purpose 23:39 The Journey of Opal: From Mine to Market 27:36 Understanding the Opal Course: Structure and Feedback 29:21 The Allure of Opal: Personal Perspectives 34:19 Opal's Renaissance: Trends and Design Innovations 38:19 Research and Future of Opal Studies 40:39 Exploring Other Australian Gemstones 52:32 The Future of Gemmology: Education and Career Paths Resources Gemological Association of Australia - https://www.gem.org.au/ Opal Course - https://www.gem.org.au/courses/opal-studies/ CIBJO Opal Guide - https://www.cibjo.org/ keywords gemmology, gemstones, Australian gemstones, gemstone grading, gemmological education, opal, diamond, jewellery design, opal study, education Support the show

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30. Colour: Physical Optics and Colour Phenomena

Send us Fan Mail Explore the fascinating world of physical optics in gemstones, focusing on iridescence, thin film interference, and the science behind colour phenomena like labradorescence and opalescence. Perfect for budding gemologists and enthusiasts alike. key topics Physical optics in gemstones Iridescence and wave interference Thin film interference in gem materials Unveiling Gemstone Colours: The Science of Iridescence and More The Hidden Physics of Gemstone Beauty: A Deep Dive sound bites "Iridescence is caused by wave interference." "Labradorescence is due to the chemistry of feldspar." "Pearlescence results from stacked layers of aragonite." Chapters 00:00 Introduction to Physical Optics 02:09 Understanding Iridescence 11:00 Exploring Twin Planes and Their Effects 14:11 The Fascination of Labradorescence and Adularescence 20:03 The Nature of Light and Colour 21:06 Exploring Rainbow Moonstone 22:28 The Allure of Pearls 25:06 Understanding Iridescence in Pearls 28:27 The Mystique of Opals 36:52 Reflections on Quality and Value in Gemstones resources Facet Nation Podcast - https://youtube.com/@facetnationuk guest links Instagram - https://instagram.com/facetnationgemmology TikTok - https://tiktok.com/@facet.nation.pod Email - mailto:facetnation@facetnation.co.uk gemmology, physical optics, iridescence, labradorescence, opalescence, gemstone science, thin film interference, gemstone phenomena Support the show

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29: Organics: Coral. Don't bleach it! Or Maybe you should.

Send us Fan Mail This episode explores the fascinating world of coral, its history, types, and significance in gemmology. Hosted by Simon and Lucinda, it covers everything from the biological origins of coral to its cultural importance and modern regulations. sound bites "Polyps are tiny creatures related to sea anemones." "Coral structures are like a living family tree." "Black and gold coral are rare and often bleached." key topics Definition of organic materials History of coral harvesting and trade Types of coral: precious, soft, fossilised, black and gold Identification and authenticity of coral in jewelry Regulations and sustainability in coral trade Chapters 00:00 Introduction to Coral and Organic Materials 02:53 The Importance of Organic Materials 05:14 Coral Fishing in History 07:57 Understanding Coral Polyps 10:32 The Journey of Coral Harvesting 13:03 Regulations and Sustainability in Coral Harvesting 15:33 Coral as a Jewelry Material 18:03 Types of Coral and Their Significance 21:50 Identifying Coral: Key Features and Characteristics 24:33 Understanding Soft Coral: Misleading Names and Textures 26:42 Fossilised Coral: The Transformation Process 28:20 Exploring Black and Gold Coral: Unique Properties and Origins 32:17 Coral Conservation: The Impact of Overfishing and Regulations 34:44 Closing Thoughts: The Beauty and Importance of Coral resources Gemmology by C. D. M. Roberts - https://www.amazon.com/Gemmology-C-D-M-Roberts/dp/XXXXXX CITES - Convention on International Trade in Endangered Species - https://cites.org/ Coral Museum in Naples, Italy - https://www.coralmuseumnaples.it/ https://instagram.com/facetnationgemmology guest links Instagram - https://instagram.com/facetnationgemmology TikTok - https://tiktok.com/@facet.nation.pod coral, gemmology, organic materials, jewellery, coral harvesting, coral types, coral regulation, fossilised coral, coral history, coral identification Support the show

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28. Colour: Pleochroism and Colour Filter Gem testing

Send us Fan Mail In this episode, Lucinda and Simon explore the fascinating world of gemmology instruments, focusing on colour filters like the Chelsea colour filter and pleochroism testing methods. Learn how these tools aid in gemstone identification and enhance gem cutting techniques. Educational key topics Colour filters in gemmology Chelsea colour filter purpose and use Pleochroism and its significance in gemstone identification Testing for pleochroism with London Dichroscope and calcite dichroscope Importance of light source and gemstone orientation in testing Natural vs synthetic gemstone identification techniques key frameworks Colour absorption principles Pleochroism and optical anisotropy Gemstone orientation and cutting strategies Titles Mastering Gemstone Identification: The Power of Colour Filters and Pleochroism Tests Unlocking Gem Secrets: Chelsea Filter and Pleochroism in Gemmology sound bites "Record your observation by stating the colour scene." "Always think about why you're looking at the stone." "Share your pleochroic observations with others." Chapters 00:00 Introduction to Colour Filters in Gemmology 01:55 Understanding Pleochroism and Selective Absorption 05:27 Testing for Pleochroism with the London Dichroscope 10:34 Comparing the London Dichroscope and Calcite Dichroscope 15:36 Documenting Pleochroism Observations 17:35 Understanding Gemstone Colours and Pleochroism 20:04 The Chelsea Colour Filter: A Gemstone Testing Tool 26:23 Practical Applications of the Chelsea Colour Filter 28:50 Identifying Gemstones: Colour Responses and Observations resources Gem-A - https://www.gem-a.com Pleochroism in Gemstones (Book) - https://www.amazon.com/pleochroism-gemstones Instagram - https://www.instagram.com/facetnationgemmology Email - facetnation@facetnation.co.uk gemmology, colour filters, Chelsea filter, pleochroism, gemstone identification, gem testing, gem cutting, gemmology tools Support the show

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27. Jadeite: A Cultural Icon

Send us Fan Mail This episode explores the fascinating world of jadeite, covering its geology, colours, treatments, cultural significance, and the latest gemological insights. Hosted by gemmologists Lucinda and Simon, it offers a deep dive into one of the most revered gemstones across cultures. key topics Jadeite vs Nephrite Colours and Varieties of Jadeite Treatments and Impostors in Jadeite Cultural Significance of Jade in China and Central America Geology and Formation of Jadeite Titles Jadeite Unveiled: 10 Facts Every Gemologist Should Know The Hidden World of Jadeite: From Burma to Central America sound bites "Imperial Jade is the poster child for jadeite" "Mining jadeite involves cutting into massive boulders" "Testing includes SG, hardness, and visual clues" Chapters 00:00 Introduction to Jadeite 02:54 The Complexity of Jadeite 05:43 Understanding Jadeite's Properties 08:39 The Formation and Sources of Jadeite 11:20 Cultural Significance and Jewellery of Jadeite 14:08 Impostors and Imitations of Jadeite 18:40 Testing and Identifying Jadeite 26:46 Exploring Literature and Its Influence 28:01 Understanding Specific Gravity in Gemmology 29:59 Testing Gem Hardness and Its Implications 31:30 Refractive Index: A Key to Gem Identification 33:28 The Complex World of Jade Treatments 39:14 Cultural Significance of Jade in China 51:31 Jade's Historical Importance in Central America Resources Gem-A (Gemological Association of Great Britain) - https://gem-a.com Real Jade Co. - https://realjade.com Instagram - https://instagram.com/facetnationgemmology jadeite, gemmology, gemstones, jade, mineralogy, treatments, cultural significance, Guatemala jade, gem identification Support the show

26. Interview: Andrew Geoghegan - Jewellery Design, Branding and Keeping it Real

Send us Fan Mail Join us as we explore the journey of jewellery designer Andrew Geoghegan, from childhood fascination with treasure to creating innovative collections inspired by history and nature. Discover insights on craftsmanship, branding, and staying authentic in a digital world. key topics Andy Geoghegan's early fascination with treasure and jewellery The journey from university to professional jewellery design The importance of authenticity and personal style in branding Inspiration from history, nature, and personal experiences Challenges and insights in modern jewellery marketing guest name Andrew Geoghegan Titles From Childhood Mischief to Jewellery Mastery: Andrew Geoghegan's Creative Journey Unlocking the Secrets of Gem Setting and Jewellery Design sound bites "That moment sparked my love for jewellery" "The use of colour in jewellery is about expression" "Finding that relic was like discovering treasure" Chapters 00:00 Introduction to Andrew Geoghegan 01:20 The Journey Begins: Early Memories of Jewellery 02:57 From Art College to Jewellery Design 09:10 Building the Brand: The Early Days 11:32 Navigating Challenges and Perseverance 16:22 The Digital Age: Marketing Jewellery Today 23:56 Design Inspirations and Client Connections 30:08 The Art of Craftsmanship in Jewellery 34:06 Innovative Use of Colour in Jewellery Design 36:59 Embracing Individuality in Gemstone Choices 37:21 Inspiration from Nature and History 42:33 The Thrill of Treasure Hunting 48:44 Launching the Treowth Collection resources Susannah King on Instagram - https://www.instagram.com/susannahkinglondon/ The Detectorists (TV Series) - https://www.netflix.com/title/80064446 Gemology Resources - https://www.gia.edu/ Jewelry Design Books - https://www.amazon.com/s?k=jewelry+design guest links Instagram - https://www.instagram.com/andrewgeoghegan/ https://andrewgeoghegan.com/ jewellery design, gemmology, jewellery collection, craftsmanship, branding, authenticity, goldsmithing, gemstone, jewellery inspiration, digital marketing Support the show

25. Interview: Wim Vertriest - GIA Field Gemmology, Gem Identification and Mozambique Rubies

Send us Fan Mail Join us as Wim Vertriest, head of field gemmology at GIA, shares his journey from geology to gemmology, insights into Mozambique rubies, and the fascinating science behind gemstone origin determination. Discover how field gemmology connects geology, anthropology, and the gemstone trade to deepen your understanding of these precious stones. Key topics Wim Vertriest's journey from geology to gemmology Insights into Mozambique ruby deposits and mining practices The role of field gemmology in understanding gemstone origins Scientific techniques for gemstone identification and origin determination The impact of Mozambique rubies on the global gemstone market Guest name Wim Vertriest Titles The Science and Secrets of Mozambique Rubies: An Interview with Wim Vertriest From Geology to Gemmology: Wim Vertriest's Journey at GIA sound bites "Gemmology is about understanding the whole ecosystem." "Heat treatment leaves subtle but detectable clues." "My favourite gemstone is the Cat's Eye Chrysoberyl." Chapters 00:00 Introduction to Gemmology and Guest Background 02:57 Wim's Journey into Gemmology 05:19 The Role of Field Gemmology 07:55 Understanding Gemstone Origins 10:14 Geological Mysteries of Rubies 12:39 The Impact of Mining on Gemstones 15:12 The Evolution of Consumer Awareness 17:43 Building a Reliable Gemstone Collection 20:30 The Multidisciplinary Nature of Field Gemmology 23:04 Exploring the Origins of Sapphires 24:09 Field Gemmology: Balancing Lab Work and Expeditions 26:03 Research-Driven Gemmology: Filling Knowledge Gaps 27:39 Emerging Trends in Gemstone Popularity 29:24 The Challenges of Diamond Origin Determination 30:37 Identifying Gemstones: The Art of Exclusion 33:23 Declassifying Misidentified Stones 39:55 The Canary in the Coal Mine: Ruby Heating Experiments 44:18 The Chemistry of Gemstones 46:47 Advanced Techniques in Gemmology 48:08 The Rise of Mozambique Rubies 52:42 The Evolution of Ruby Mining 58:42 Changing Perceptions of Rubies 01:01:11 The Future of Gemmology resources GIA Official Website - https://www.gia.edu Gems and Gemology Journal - https://www.gia.edu/gems-gemology Mozambique Ruby Mining Insights (Report) - https://www.gia.edu/mozambique-ruby-report Wim Vertriest's Profile on LinkedIn - https://www.linkedin.com/in/wimvertriest Guest links LinkedIn - https://www.linkedin.com/in/wimvertriest GIA Profile - https://www.gia.edu/wim-vertriest gemmology, gemstones, Mozambique rubies, gemstone origin, field gemmology, GIA, gem research, gemstone mining, gemstone identification, gem science Support the show

24. Colour: The Spectroscope and Selective Absorption in Gems

Send us Fan Mail In this episode of Facet Nation, Simon and Lucinda delve into the fascinating world of gemmology, focusing on the spectroscope and its critical role in identifying gemstones. They discuss the different types of spectroscopes, techniques for using them, and the importance of diagnostic spectra in gem identification. The conversation is rich with insights into the nuances of color absorption and the practical applications of these tools in the field. The hosts also share personal anecdotes and tips for gem enthusiasts, making the episode both informative and engaging. Takeaways The spectroscope is essential for identifying gemstones. There are two main types of handheld spectroscopes: prism and diffraction grating. Using a spectroscope can help you understand how gemstones absorb light. Techniques for using a spectroscope include transmitted and reflected light methods. Diagnostic spectra are crucial for identifying specific gemstones. Understanding colour absorption helps in gem identification. The spectroscope can be used on both rough and polished stones. Learning the diagnostic spectra of gemstones is beneficial for gemmologists. The conversation emphasises the importance of practical experience in gemmology. Future episodes will cover more advanced topics in gemmology. "We're going to talk about the spectroscope." "It's a really good one." "You can't see it, but it's there." Chapters 00:00 Introduction to Gemmology and Recent Finds 02:06 Exploring the Spectroscope: A Gemmologist's Tool 11:16 Understanding Dispersion and Diffraction in Gemstones 18:39 Techniques for Using the Spectroscope 22:31 Diagnostic Spectra and Their Importance 26:53 The Art of Writing and Dashes 29:41 Understanding Spectrums: Zircon and Ruby 32:18 Emerald and Alexandrite Spectrums 35:03 Synthetic and Natural Sapphires 37:28 Exploring Iron Spectrums in Gemstones 40:03 The Spectrum of Garnets and Jadeite 42:42 Cobalt Spectrums: Spinel and Glass 45:31 Rare Earth Elements and Red Glass 47:59 Diamonds and Their Unique Spectra gemmology, spectroscope, gemstones, diagnostic spectra, colour absorption, gem identification, gemmology techniques, gem enthusiasts, gem collectors, gemstone analysis, gemology Support the show

23. Colour: An introduction

Send us Fan Mail In this episode of the Facet nation gemmology podcast, Lucinda and Simon explore the intricate world of colour in gemstones. They discuss the significance of colour in determining the value of gemstones, the science of light and how it interacts with materials to create colour, and the chemical elements responsible for these hues. The conversation also covers the colour wheel and its relevance to gemstones, the methods of analysing gemstones through spectroscopy, and the perception of colour. The episode concludes with a teaser for future discussions on more complex topics related to colour in gemmology. Takeaways Colour is the most important aspect of coloured gemstones. The value of gemstones is influenced by colour, history, and trends. Light is essential for colour perception in gemstones. Selective absorption determines the colour we see in gemstones. Eight chemical elements are responsible for colour in gemstones. The colour wheel helps understand colour relationships in gemstones. Not all light sources are suitable for gemstone analysis. Spectroscopy is a key tool in analysing gemstone colours. Understanding the science of colour enhances appreciation for gemstones. Future episodes will explore more complex topics in gemmology. Titles Exploring the Colour Spectrum of Gemstones The Science Behind Gemstone Colours Sound bites "Everything comes back to light." "Not all white light is created equal." "If there is no light, does colour exist?" Chapters 00:00 Introduction to Colour in Gemmology 01:50 The Importance of Colour in Gemstones 04:34 Understanding Light and Colour 09:11 Chemical Elements and Colour 12:29 The Colour Wheel and Its Application 16:15 Spectroscopy and Light Sources 21:16 Conclusion and Future Topics gemstones, colour, light, spectroscopy, chemical elements, colour wheel, gemmology, ruby, sapphire, emerald Support the show

22. Interview: Justin Prim - gemcutter, author, teacher and historian

Send us Fan Mail In this episode of Facet Nation, hosts Lucinda and Simon welcome gem cutter Justin K Prim, who shares his fascinating journey from music to gemmology. Justin discusses his experiences in the gem trade, the art and science of gem cutting, and the importance of community in the field. He also delves into his favorite gemstones, the challenges of the trade, and his exciting new projects, including a gem cutting school and a museum showcasing his extensive collection of machines and books. Find out more: https://www.magusgems.com https://www.facetingapprentice.com Takeaways Justin transitioned from a career in music to gem cutting. He discovered the gem trade through a local gem show. Lapidary clubs play a crucial role in learning gem cutting. Emeralds are Justin's favourite gemstones to cut. The gem cutting process requires patience and attention to detail. Community support is vital for aspiring gem cutters. Justin emphasises the importance of creativity in gem cutting. He is excited about his new gem cutting school and museum. The gem trade is evolving, with a growing appreciation for well-cut stones. Justin's books aim to educate and inspire future gem cutters. Titles From Music to Gemmology: Justin K Prim's Journey The Art of Gem Cutting with Justin K Prim Sound bites "I want to keep cutting." "I love cutting emeralds." "It's a mystery." Chapters 00:00 Introduction to Gemmology and Guest Introduction 01:13 Justin's Journey into Gem Cutting 05:19 Discovering the Gem Trade 09:06 The Evolution of Gem Cutting Community 11:45 Getting Started in Lapidary 14:47 The Art of Gem Cutting 16:18 Moving to Bangkok for Gemmology School 20:20 Building a Career in Gem Cutting 23:07 Life in France and the Gem Business 25:47 The Process of Cutting a Gemstone 27:01 The Art of Preforming and Cutting Gems 29:54 Polishing and Final Touches in Gem Cutting 31:54 Exploring Different Faceting Techniques 33:43 The Journey of Learning and Experimentation 36:30 Building a Gem Cutting School and Museum 38:15 The Passion Behind Gem Cutting and Teaching 42:29 The Evolution of Gem Cutting Techniques 47:32 Historical Insights into Gem Cutting 52:36 The Importance of Quality in Gemstones 54:57 Understanding Coloured Stones vs. Diamonds 56:28 The Journey of a Gemstone Buyer 58:53 Emotional Connections in Jewellery Making 01:04:48 The Art of Cutting Gemstones 01:06:23 Future Plans and Collaborations gemmology, gem cutting, gemstones, lapidary, gem trade, gem cutter, gem education, gem collection, gem stories, gem enthusiasts, books, gem history, museum Support the show