Facet Nation: A Gemmology Podcast

Facet Nation
  • 5.0 (2)
  • 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. 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

  2. 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

  3. MAR 16

    28. Colour: Pleochroism and Colour Filter Gem testing

    Send a text 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

  4. 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

  5. MAR 2

    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

    53 min

  6. FEB 23

    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

    1h 3m

  7. FEB 16

    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

    53 min

  8. FEB 9

    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

    25 min
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Ratings & Reviews

5
out of 5
2 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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