Facet Nation: A Gemmology Podcast

Epizódok

• 38. End of Season 1: Fashioning Part Two - Gemstone faceting techniques 01.06.2026 41p

  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 techniqu...
• 37. Gemstone Fashioning Part One: An Overview for Gemmology Study 25.05.2026 49p

  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 Vocabul...
• 36. Interview: Michelle Mai - Cutting and Designing Gemstones 18.05.2026 52p

  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 ...
• 35. Tourmaline Part II: The King of Tourmaline...? 11.05.2026 40p

  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 ...
• 34. Gemstone Colour: Charge Transfer and Colour Centres 04.05.2026 38p

  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 ...
• 33. Tourmaline Part One: Conquistadors and the party where everyone's invited 27.04.2026 42p

  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 Tourm...
• 32. Causes of Gemstone Colour: Dispersed Metal Ions 20.04.2026 28p

  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 g...
• 31. Interview: Ian Dun FGAA FGSGA, Federal President Gemmological Association of Australia 13.04.2026 55p

  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 gu...
• 30. Colour: Physical Optics and Colour Phenomena 30.03.2026 41p

  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 Div...
• 29: Organics: Coral. Don't bleach it! Or Maybe you should. 23.03.2026 36p

  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 ...
• 28. Colour: Pleochroism and Colour Filter Gem testing 16.03.2026 32p

  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 an...
• 27. Jadeite: A Cultural Icon 09.03.2026 55p

  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 ...
• 26. Interview: Andrew Geoghegan - Jewellery Design, Branding and Keeping it Real 02.03.2026 52p

  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 Inspi...
• 25. Interview: Wim Vertriest - GIA Field Gemmology, Gem Identification and Mozambique Rubies 23.02.2026 1ó 2p

  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...
• 24. Colour: The Spectroscope and Selective Absorption in Gems 16.02.2026 52p

  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 person...
• 23. Colour: An introduction 09.02.2026 25p

  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 perc...
• 22. Interview: Justin Prim - gemcutter, author, teacher and historian 02.02.2026 1ó 7p

  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 ...
• 21. Interview: Jeff Hapeman, Earth's Treasury. Montana Sapphires and more 26.01.2026 1ó 2p

  Send us Fan Mail In this episode of Facet Nation, hosts Lucinda and Simon interview Jeff Hapeman, owner of Earth's Treasury, who shares his unique journey from academia to the gem industry. Jeff discusses the fascinating world of Montana sapphires, the challenges and opportunities within the gem market, and the importance of ethical sourcing and cutting techniques. The conversation highlights the growing popularity of coloured stones and the evolving consumer preferences in jewellery design. ...
• 20. The Refractometer: Gem testing and how it works 19.01.2026 44p

  Send us Fan Mail In this episode of Facet Nation, Simon and Lucinda delve into the intricacies of the refractometer, a crucial tool for gemmologists. They discuss its importance in identifying gemstones by measuring the refractive index, emphasising how light behaves when it enters different materials. The hosts share personal anecdotes and practical tips for using the refractometer effectively, including the significance of using the right light source and the challenges posed by contact flu...
• 19. Gemmology Exam Preparation: What to expect 12.01.2026 56p

  Send us Fan Mail In this episode of Facet Nation, Lucinda and Simon discuss their experiences preparing for and taking the Gem-A exams, particularly focusing on the diploma exam. They share personal anecdotes about their study strategies, the unique challenges of the Gem-A exams, and tips for managing exam anxiety. The conversation covers various aspects of preparation, including the importance of understanding the material deeply, utilizing practice papers, and the significance of real-world...