Facet Nation: A Gemmology Podcast

Facet Nation
  • 5.0 (4)
  • NATURAL SCIENCES

Facet Nation is a new kind of gemmology podcast. Rigorous enough for serious students, but fascinating and funny enough for anyone craving an inside look at gemstones, jewellery and the shadowy world surrounding them. Part revision aide, part storytime, Lucinda and Simon are your qualified guides to the world’s most ancient treasures.

  1. 2D AGO

    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

    38 min

  2. APR 27

    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

    42 min

  3. APR 20

    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

    28 min

  4. APR 13

    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

    55 min

  5. MAR 30

    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

    41 min

  6. MAR 23

    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

    37 min

  7. MAR 16

    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

    32 min

  8. MAR 9

    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

    56 min
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Ratings & Reviews

5
out of 5
4 Ratings

About

Facet Nation is a new kind of gemmology podcast. Rigorous enough for serious students, but fascinating and funny enough for anyone craving an inside look at gemstones, jewellery and the shadowy world surrounding them. Part revision aide, part storytime, Lucinda and Simon are your qualified guides to the world’s most ancient treasures.

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