Facet Nation: A Gemmology Podcast
Facet Nation is a gemmology podcast that balances rigorous study with engaging storytelling. Hosts Lucinda and Simon guide listeners through the world of gemstones, jewellery, and the often shadowy industry surrounding them. The show serves as both a revision aid for serious students and an entertaining deep dive for curious minds.
Episodes
42. Garnet: Part Two - Tsavorite, Faberge and the fate of Campbell Bridges
Send us Fan MailIn part two, we explore the Ugrandite series of garnets, including their chemistry, history, and the stories behind famous varieties like Tsavorite and Demantoid. Join us for a deep dive into gemstone lore, geology, and the vibrant stories that make these stones so captivating. key topicsThe isomorphous series of garnets and their chemical formulasThe story of tsavorite's dis
41. Interview: Arya Akhavan returns! Growing Exotic and Novel Lab Sapphires
Send us Fan MailArya 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 passi
40. Season 2: Garnet Part One
Send us Fan MailHello and welcome back to Season 2 of Facet Nation: A Gemmology PodcastIn 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 topicsGarnet varieties and their chemical compositionsHistorical significance and trade of garnetsGemmolo
39. Season 2 Preview and Summer Catch Up
Send us Fan MailIn 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 OregonSpectrum Sunstone Mine visitGemmology events and community o
38. End of Season 1: Fashioning Part Two - Gemstone faceting techniques
Send us Fan MailThis 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 topicsDiamond
37. Gemstone Fashioning Part One: An Overview for Gemmology Study
Send us Fan MailIn 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 topicsGemstone cutting terminologyDifferences between lapidary and diamond manufacturingFactors influencing gemstone cut decisionsHistorical gem cutting techniques
36. Interview: Michelle Mai - Cutting and Designing Gemstones
Send us Fan MailJoin 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 techniquesTools and machinery for facetingDesign principles for gemstonesMaterials used in gem cuttingThe journey of a gem cutterGuest nameM
35. Tourmaline Part II: The King of Tourmaline...?
Send us Fan MailIn 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
34. Gemstone Colour: Charge Transfer and Colour Centres
Send us Fan MailExplore 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 topicsCharge transfer in gemstonesColour centres and defectsEffects of heat treatment on gemstone colourTitlesThe Science Behind Gemstone Colours: Charge Transf
33. Tourmaline Part One: Conquistadors and the party where everyone's invited
Send us Fan MailJoin 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 seriesFormation of tourmaline in pegmatites and metamorphic rocksVarieties of tourmaline and their unique featuresHistorical lore and the myth of pyroelectricityTesti
32. Causes of Gemstone Colour: Dispersed Metal Ions
Send us Fan MailThis 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 colourValency states of transition metals and their eff
31. Interview: Ian Dun FGAA FGSGA, Federal President Gemmological Association of Australia
Send us Fan MailThis 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 topicsGemological education and certification in AustraliaAustra
30. Colour: Physical Optics and Colour Phenomena
Send us Fan MailExplore 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 topicsPhysical optics in gemstonesIridescence and wave interferenceThin film interference in gem materialsUnveiling Gemstone Colours: T
29: Organics: Coral. Don't bleach it! Or Maybe you should.
Send us Fan MailThis 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.""Bla
28. Colour: Pleochroism and Colour Filter Gem testing
Send us Fan MailIn 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 topicsColour filters in gemmologyChelsea colour filter purpose and usePleochroism and its signific
27. Jadeite: A Cultural Icon
Send us Fan MailThis 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 topicsJadeite vs NephriteColours and Varieties of JadeiteTreatments and Impostors in JadeiteCultural
26. Interview: Andrew Geoghegan - Jewellery Design, Branding and Keeping it Real
Send us Fan MailJoin 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 topicsAndy Geoghegan's early fascination with treasure and jewelleryThe journey from university to profes
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 topicsWim Vertriest's journey fr
24. Colour: The Spectroscope and Selective Absorption in Gems
Send us Fan MailIn 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 ab
23. Colour: An introduction
Send us Fan MailIn 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 i
22. Interview: Justin Prim - gemcutter, author, teacher and historian
Send us Fan MailIn 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 projec
21. Interview: Jeff Hapeman, Earth's Treasury. Montana Sapphires and more
Send us Fan MailIn 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
20. The Refractometer: Gem testing and how it works
Send us Fan MailIn 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, in
19. Gemmology Exam Preparation: What to expect
Send us Fan MailIn 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
18. The Best Kept Secrets of Spinel
Send us Fan MailSummaryIn this episode, Lucinda and Simon explore the fascinating world of spinel, a gemstone often overshadowed by rubies and sapphires. They discuss its chemical composition, colour variations, and historical significance, as well as the modern rise of synthetic spinel. The conversation delves into the properties that make spinel a desirable choice for jewellery, its unique inclu
17. Interview: Rosie Young. Lab Gemmology and all things Sunstone
Send us Fan MailIn this episode of Facet Nation, hosts Simon and Lucinda chat with Rosie Young, a lab gemologist at GCS Lab. Rosie shares her journey from a tax advisor to a passionate gemmologist, discussing her education, experiences, and the day-to-day operations in a gem lab. The conversation delves into the fascinating world of sunstones, including their unique properties, treatments, and the
16. Light & Gem Testing Instruments: The Polariscope
Send us Fan MailIn this episode of Facet Nation, Simon and Lucinda explore the intricacies of gemmology, focusing on the polariscope and its significance in testing gemstones. They discuss the behaviour of light in relation to isotropic and anisotropic materials, the importance of understanding internal stress in gems, and the use of the conoscope for identifying gemstones. The conversation emphas
15. Live Episode - Tanzanite - The Gem and Mineral Show London
Send us Fan MailIn this live episode of Facet nation, hosts Simon and Lucinda share their experiences at the London Gem and Mineral Show, where they discuss the fascinating gemstone Tanzanite, its properties, discovery, and significance as a birthstone for December. They delve into the science behind Tanzanite's colour, its varieties, and its cultural importance, while also sharing personal a
14. Light and Optics in Gemstones
Send us Fan MailIn this episode of the Facet nation podcast, Simon and Lucinda delve into the intricate world of light and optics as they relate to gemmology. They explore the fundamental properties of light, including reflection and refraction, and discuss how these principles apply to gemstones. The conversation covers the importance of cut in diamonds, the various optical effects seen in gemsto
13. Interview: Video Game Gemstones and Precision Gem cutting with Arya Akhavan
Send us Fan MailIn this episode Lucinda and Simon speak to gem cutting pioneer Arya Akhavan, his trademarked gemstone cuts; the Void Reaver and the Legend of Zelda inspired Rupee cut are some of the most beautiful you'll ever see.Listen to this fascinating interview full of almost revealed secrets and future excitement. If you love gems, videogames or videogame gems, this is the interview for
12. Light and Wave Theory - A History
Send us Fan MailIn this episode of the Facet Nation: A gemmology podcast, hosts Lucinda and Simon explore the intricate relationship between light and gemstones. They discuss the importance of light in visibility and gem testing, delve into the characteristics of light waves, and examine historical theories of light, including Newton's corpuscular theory and Huygens' wave theory. The con
11. Gem weight and Specific Gravity: How heavy are your gemstones?
Send us Fan MailIn this episode of the Facet nation podcast, Simon and Lucinda delve into the intricate world of gemmology, focusing on the concepts of weight, density, and specific gravity. They explore the historical significance of Archimedes' principle, practical methods for hydrostatic weighing, and the use of heavy liquids in gem identification. The hosts engage with their audience, sha
10. Gem Durability: How hard are your gemstones?
Send us Fan MailIn this episode of FacetNation, Lucinda and Simon delve into the essential aspects of gem durability, focusing on hardness, toughness, and stability. They discuss the Mohs scale of hardness, the importance of understanding these properties for both gemologists and jewellery enthusiasts, and practical tips for caring for gemstones. The conversation also covers the differences betwee
9. Spooktacular 2025: The World's Most Cursed Gemstones
Send us Fan MailIn this episode of Facet Nation, Lucinda and Simon explore the spooky side of gemstones, discussing Halloween traditions, recent robberies in the gem industry, and the history of cursed stones. They delve into tales of the Black Orlov diamond, the Bahia Emerald, The Black Prince's Ruby, and the infamous Hope Diamond, revealing the dark stories and misfortunes associated with t
8. Beryl: Emerald's mum and Bas's wife
Send us Fan MailIn this episode, Lucinda and Simon dive deep into the fascinating world of Beryl gemstones, exploring its various types, including Emerald, Aquamarine, and Bixbite. They discuss the geological formation of Beryl, its unique characteristics, and the treatments often applied to enhance its appearance. The conversation also touches on the rarity of certain Beryl varieties and the impo
7. Gem Crystallography: Habits and Forms
Send us Fan MailIn this episode of Facet Nation, Simon and Lucinda delve into the fascinating world of gemmology, focusing on crystals and their structures. They discuss the importance of understanding crystal systems, symmetry, and the various forms and habits of crystals. The conversation also covers topics such as twinning, pseudomorphs, polymorphs, and isomorphism, providing listeners with a c
6. Gem Chemistry: Materials, Structure and Chemical Elements
Send us Fan MailIn this episode of Facet Nation, Lucinda and Simon delve into the foundational aspects of gemmology, focusing on the materials and structures that make up gemstones. They explore chemical elements, atoms, and subatomic particles, emphasising the importance of the periodic table and valency in understanding chemical bonds. The discussion covers crystalline and amorphous structures,
5. Corundum Part Two: Rubies, 'real' and otherwise
Send us Fan MailKeywordsrubies, gemology, birthstones, Myanmar, treatments, synthetic rubies, famous rubies, gem identification, corundum, gemstone qualityIn this episode, Simon and Lucinda delve into the captivating world of rubies, exploring their significance as July's birthstone, the science behind their colour and quality, and the various localities where they are found. They discuss the
4. Corundum Part One: All Hail Queen Sapphire
Send us Fan MailIn this episode, Lucinda and Simon delve into the fascinating world of corundum, exploring sapphires and rubies. They discuss the chemical composition, durability, and popularity of these gemstones, as well as their significance in engagement rings. The conversation also touches on the crystal structure of sapphires, the various colours and trends in the market, and the stories beh
3. Observation, magnification and the amazing world of gem inclusions
Send us Fan MailIn this episode of Facet Nation, Lucinda Beeman and Simon Barber delve into the world of gemmology, focusing on the essential skill of observation. They share their personal experiences with gemmology exams, discuss the practical techniques for examining gemstones, and explore the significance of colour, lustre, transparency, and cut in determining a gem's value. The conversat
2. The Gem Kit
Send us Fan MailSummary:In this episode of Facet Nation, Simon and Lucinda delve into the practical side of gemmology, focusing on the essential tools every gemologist should have in their toolkit. They discuss the importance of various instruments, how to use them effectively, and the differences between testing in a real-world setting versus an exam environment. The conversation covers everythin
1. WTF is Gemmology?
Send us Fan MailSo you wanna be a gemmologist? Or you just wanna know if granny's jewellery box is worth taking down the pawn shop? You're in the right place. In the first Facet Nation episode, you'll meet fellow gemstone obsessives Lucinda and Simon. Get the inside scoop on Gem-A and the jewellery industry at large and attempt to answer the eternal question; WTAF is gemmology?Summa
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