Facet Nation: A Gemmology Podcast

Facet Nation
  • 5.0 (1)
  • 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. 1D AGO

    17. Interview: Rosie Young. Lab Gemmology and all things Sunstone

    Send us a text In 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 science behind their colours. Rosie also highlights her research on sunstones and the importance of spreading awareness about this beautiful gemstone. The episode concludes with insights into the gem market and the joy of discovering new gemstones. Takeaways Rosie transitioned from tax advising to gemmology, pursuing her passion. She graduated with a BSc in Gemmology and started working at GCS Lab. Lab gemmology involves analysing gemstones using advanced equipment. Sunstones are a unique and under-appreciated gemstone. Copper-bearing sunstones come primarily from Oregon. Diffusion treatment can alter the appearance of gemstones. Color zoning in sunstones is a fascinating phenomenon. Rosie enjoys sharing her knowledge about gemstones with others. The gem market is constantly evolving with new trends. Sunstones have a variety of localities and unique characteristics. Titles Exploring the World of Gemmology with Rosie Young The Journey from Tax Advisor to Gemmologist Sound Bites "I always loved gems as a kid." "It's worked out really well for me." "I would just be happy for it." Chapters 00:00 Introduction to Gemmology and Guest Introduction 04:39 Rosie's Journey into Gemmology 07:06 Educational Experiences in Gemmology 09:43 Internship at GIA and Research Focus 12:19 Working at GCS Lab: Daily Operations 15:11 Lab Equipment and Techniques 17:33 Trends in Gemstone Submissions 20:18 Favourite Gemstones and Unique Finds 22:46 Research on Sunstones and Their Varieties 26:14 The Quest for Sunstone Knowledge 27:18 Origins of Sunstones 28:25 Locality Preferences and Unique Characteristics 28:59 Copper-Bearing Sunstones: A Comparative Analysis 30:48 Colour Zoning in Oregon Sunstone 33:29 Copper Diffusion Experiments 36:29 The Science Behind Diffusion Treatments 38:15 Identifying Diffusion-Treated Stones 42:23 Personal Connections to Sunstone 44:59 Exploring the World of Sunstones 47:34 Inspiration from Gemstones 48:25 Holiday Greetings and Future Plans Keywords gemmology, sunstone, lab gemmology, gemstone treatments, GCS Lab, Rosie Young, gem education, gemstone analysis, gem certification, gem market trends

    50 min

  2. DEC 15

    16. Light & Gem Testing Instruments: The Polariscope

    Send us a text In 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 emphasises community engagement and the joy of learning in the field of gemmology. Titles The Fascinating World of Gemmology Understanding Gem Testing Instruments Sound bites "We want to see more cats." "Light needs to be able to get through." "The bullseye is diagnostic of quartz." Chapters 00:00 Introduction to Gemmology and Light Testing 02:55 Deep Dive into the Polariscope 05:26 Understanding Polarisation and Light Behaviour 08:01 Isotropic vs. Anisotropic Materials 10:41 Testing Gemstones with the Polariscope 13:05 Vibration Directions in Gemstones 15:49 Birefringence and Optical Axes 18:41 Conclusion and Key Takeaways 23:52 Understanding Polycrystalline Materials 27:19 Exploring Strain and Anomalous Double Refraction 30:39 Identifying Tabby Extinction and Writhing Snakes 34:11 The Role of the Conoscope in Gem Testing 37:26 Interference Figures: The Bullseye and Beyond 39:47 Biaxial Interference Figures and Their Significance Understanding the importance of the polariscope in gemmology. Light behaviour is crucial for interpreting gemstone properties. Isotropic materials remain dark under polarised light. Anisotropic materials show varying light responses. Polycrystalline materials allow light through in multiple directions. Anomalous double refraction indicates internal stress in gemstones. Conoscopes help identify gemstone types through interference figures. Interference figures provide diagnostic information about gemstones. Recognising tabby extinction and writhing snakes in gem testing. The podcast emphasises community engagement and learning. gemmology, polariscope, isotropic, anisotropic, gemstones, light behaviour, gem testing, interference figures, conoscope, anomalous double refraction, gemology

    46 min

  3. DEC 8

    15. Live Episode - Tanzanite - The Gem and Mineral Show London

    Send us a text In 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 anecdotes and insights from their gemmology journey. The London Gem and Mineral Show was a significant experience for the hosts. Tanzanite is the birthstone for December, making it a popular gift choice. Zoisite is the mineral family that Tanzanite belongs to. Tanzanite's colour is influenced by the presence of vanadium and iron. The discovery of Tanzanite is attributed to various individuals, leading to some controversy. Tanzanite requires heat treatment to achieve its vibrant blue colour. The gemstone is known for its vitreous lustre and unique trichroism. Tanzanite is relatively soft, making it less suitable for certain types of jewellery. The largest faceted Tanzanite weighs 703 carats, showcasing its potential size. Tanzanite is associated with transformation and spirituality in various cultures. Titles The Fascinating World of Tanzanite Tanzanite: A December Birthstone Exploration Sound bites "It's our first ever live show!" "Tanzanite has a vitreous luster." "Tanzanite is a very rare stone." Chapters 00:00 Introduction to the Live Show Experience 03:16 Exploring Tanzanite: The Birthstone of December 06:19 Understanding Zoisite and Its Varieties 09:08 The Science Behind Tanzanite's Colour and Properties 12:25 The Discovery and Commercialisation of Tanzanite 15:11 Tanzanite's Unique Characteristics and Uses 18:09 Metaphysical Properties and Cultural Significance of Tanzanite 21:12 Conclusion and Future of Facet nation Podcast Tanzanite, Gemmology, Birthstone, Zoisite, Live Podcast, Gemstones, Mineral Show, Colour Properties, Discovery, Metaphysical Properties, Gemology, Tiffany, Trichroism

    28 min

  4. DEC 1

    14. Light and Optics in Gemstones

    Send us a text In 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 gemstones, and the significance of birefringence. The hosts also touch on the practical applications of these concepts in gem testing, providing listeners with a comprehensive understanding of how light interacts with gemstones. Takeaways Light is a form of electromagnetic energy that travels at high speeds. Visible light is a small part of the electromagnetic spectrum, detectable by the human eye. Brilliance in diamonds is a result of precise cutting and internal reflections. The cut of a diamond significantly affects its appearance and brilliance. Total internal reflection is crucial for maximizing light return in gemstones. Aventurescence is caused by reflective inclusions within a gemstone. The cat's eye effect requires specific needle-like inclusions to be visible. Asterism is a star-like effect that requires multiple sets of inclusions. Understanding birefringence helps in identifying different gemstone types. The optical properties of gemstones are essential for gem testing and identification. The Fascinating World of Gemology Light and Optics: A Gemologist's Guide Sound bites "Light is a form of electromagnetic energy." "Visible light is white." "Brilliance is what makes diamonds special." Chapters 00:00 Introduction to Facet nation and Light in Gemmology 03:38 Understanding Light and Its Properties 09:14 Refraction and Its Importance in Gemmology 17:39 Single vs. Double Refraction in Gemstones 23:52 Birefringence and Its Applications in Gem Testing 24:41 Understanding Light and Gemstones 28:24 The Brilliance of Diamonds 31:49 The Importance of Cut in Diamonds 34:22 Exploring Fire and Dispersion in Gemstones 37:05 Optical Effects in Gemstones 46:15 Chatoyancy and Asterism: The Star Effect 49:08 Labradoressence and Other Optical Phenomena gemology, light, optics, reflection, refraction, birefringence, diamonds, optical effects, gemstones, gem testing, gemmology

    52 min

  5. NOV 24

    13. Interview: Video Game Gemstones and Precision Gem cutting with Arya Akhavan

    Send us a text In 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 you. Arya Akhavan is a pioneer in video game-themed gem cutting. The gem cutting community is becoming more collaborative and innovative. Video games have a historical connection to gemstones as valuable items. Creating video game-inspired gems involves both artistic and technical skills. The rupee cut is a unique design that poses specific challenges. Community forums like Shiny Precious Gems foster support and creativity. Modern gem cutting techniques are evolving rapidly, especially post-COVID. There is a growing demand for high-end video game-themed jewelry. Education in gem cutting is becoming more accessible and innovative. The emotional connection to gemstones influences how they are valued and cherished. Link:  Kickstarter https://www.kickstarter.com/projects/canadacrystallabs/the-gemstone-lab-growing-never-before-seen-lab-sapphires Reddit https://www.reddit.com/r/Shinypreciousgems/ Titles Gemology Meets Gaming: The Rupee Cut Revolution Crafting Gems: Arya Akhavan's Journey Sound bites "It's a really fascinating chat." "Nobody else had published them." "It's a rescue puppy." Chapters 00:00 The Emergence of Video Game Jewelry 04:56 Educational Challenges in Gem Cutting 07:36 The Growth of Modern Gem Cutters 10:19 Community Building in Gemology 13:20 The Intersection of Gemstones and Video Games 15:52 Creating the Rupee Cut 18:38 Characteristics of the Rupee Cut 21:40 Materials for Gem Cutting 24:11 Challenges with Certain Gem Materials 25:12 Setting and Wearing Gemstones 26:59 Emotional Connections to Cut Stones 28:27 Innovative Gemstone Designs 29:48 The Evolution of Gem Cutting Techniques 33:09 The Renaissance of Modern Gem Cutting 36:26 Future Innovations in Gemstone Research 43:01 Exploring Corundum and Sapphires 45:18 Community Engagement in Gemology 46:47 The Value of Rupees and Gaming References gemmology, video game gems, gem cutting, Arya Akhavan, gemstone design, community building, gem education, rupee cut, innovative designs, gem materials, gemology

    47 min

  6. NOV 17

    12. Light and Wave Theory - A History

    Send us a text In 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 conversation also covers the significance of polarised light, the behaviours of light such as reflection, refraction, and diffraction, and the implications of the double slit experiment. The episode concludes with a look ahead to future topics related to light and gemmology. Titles Exploring the Nature of Light in Gemmology The Journey of Light: From Waves to Gems Sound bites "What is light?" "Light is essential for visibility." "Polarised light reduces glare." Chapters 00:00 Introduction and Graduation Celebration 03:03 Mnemonic for Mohs Scale 05:48 Understanding Light and Optics 11:28 Characteristics of Waves 16:59 Polarised Light and Its Applications 22:21 Wave Behaviours: Reflection, Refraction, and Diffraction 24:16 History of Light Theory and Newton's Contributions 26:29 Theories of Light: Newton vs. Huygens 30:07 The Double Slit Experiment: Proving Wave Theory 33:57 Einstein and the Birth of Modern Physics 36:10 The Photoelectric Effect: Light as Particles 38:31 Understanding Light: Refraction and Colour 42:09 Reflection, Transmission, and Absorption of Light 43:50 Recap and Future Discussions on Light and Gemmology Takeaways Light is essential for visibility and understanding gemstones. The Mohs scale mnemonic can be improved for better memorization. Light behaves as both a wave and a particle, known as wave-particle duality. Polarised light is crucial for reducing glare and enhancing visibility. Understanding wave characteristics like amplitude and frequency is vital for gemmology. Reflection, refraction, and diffraction are key behaviours of light waves. Historical theories of light evolved from Newton's corpuscular theory to wave theories. The double slit experiment demonstrated light's wave nature through interference patterns. Light interacts with matter, affecting colour perception and gemstone identification. Future discussions will delve deeper into light's role in gem testing. gemmology, light, optics, waves, Mohs scale, polarised light, reflection, refraction, diffraction, history of light, gemology, science

    47 min

  7. NOV 10

    11. Gem weight and Specific Gravity: How heavy are your gemstones?

    Send us a text In 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, sharing insights and personal anecdotes, while emphasising the importance of these concepts in the gem trade. Titles The Weight of Gems: Understanding Density and Gravity Gemmology 101: Weight, Density, and Specific Gravity Sound bites "Weight is crucial in gem pricing." "The importance of weight in gem pricing." "Carat weight affects the price per carat." Chapters 00:00 Introduction and Welcome 02:53 Engagement with Listeners 05:14 Understanding Weight and Density in Gemstones 10:33 The Importance of Carat Weight 14:49 Price Per Carat and Market Dynamics 20:18 Specific Gravity Explained 25:11 Historical Context of Specific Gravity Measurement 27:24 Eureka! The Principle of Displacement 28:39 Hydrostatic Weighing: The Science of Density 33:45 Heavy Liquids: Testing Gemstones at Home 38:17 The Game of Sink, Swim or Suspend Weight is crucial in gem pricing and identification. Specific gravity is a key property for gemologists. Archimedes' principle is foundational in understanding density. Hydrostatic weighing is a practical method for determining specific gravity. Heavy liquids can help distinguish between different gemstones. Amber's specific gravity allows it to float in saltwater solutions. Carat weight affects the price per carat of gemstones. Understanding heft can aid in gem identification. Gemmologists often use digital scales for precise measurements. Engagement with listeners enhances the podcast experience. gemmology, weight, density, specific gravity, gemstones, Archimedes, hydrostatic weighing, heavy liquids, carat weight, gem identification, gemology

    51 min

  8. NOV 3

    10. Gem Durability: How hard are your gemstones?

    Send us a text In 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 between fracture and cleavage, the impact of chemical stability on gems, and how to properly maintain and wear jewellery. The episode concludes with listener engagement and a shout-out to dedicated fans. Takeaways Understanding durability is crucial for gemmologists and jewellery lovers. Hardness, toughness, and stability are the three main aspects of durability. The Mohs scale helps determine a gemstone's hardness. Toughness refers to a material's ability to resist fracture. Stability involves a gem's resistance to chemical and physical changes. Different gemstones have varying levels of durability and care requirements. Fracture and cleavage are important concepts in gemmology. Chemical stability can affect the appearance and longevity of gemstones. Proper care can prevent damage to valuable gems. Engaging with listeners enhances the podcast experience. Titles The Essential Guide to Gem Durability Understanding Gemstone Hardness and Toughness Sound bites ""You need to know them stone for stone."" ""Last on and first off for pearls."" ""Don't put your tourmalines in the ultrasonic, y'all."" Chapters 00:00 Understanding Durability in Gemstones 02:57 The Importance of Hardness 05:33 Mohs Scale of Hardness Explained 08:08 Identifying Gemstones by Hardness 10:44 Toughness and Durability in Gemstones 13:19 The Role of Friedrich Mohs 15:48 Practical Applications of Hardness Testing 20:46 Understanding Hardness and Scratch Testing 24:44 Identifying Composite Materials and Their Characteristics 26:28 Differential Hardness Explained 30:35 The Art of Cleaving Diamonds 34:21 Modern Techniques in Diamond Cutting 35:53 Differential Hardness in Other Gemstones 41:08 The Streak Test: A Practical Approach 45:36 Toughness vs Hardness in Gemstones 46:18 Thermal Expansion and Gemstone Integrity 47:46 The Dark Side of Crackled Quartz 49:09 Understanding Fractures in Gemstones 50:53 Cleavage vs. Fracture: Key Differences 52:50 The Importance of Cleavage in Gem Identification 54:35 Incipient Cleavage: A Hidden Danger 56:21 Stability: The Third Pillar of Durability 01:01:11 Chemical Vulnerabilities of Gemstones 01:04:29 Porosity and Its Impact on Stability 01:06:24 Final Thoughts on Gem Durability gemmology, durability, hardness, toughness, stability, Mohs scale, gemstones, jewellery care, fracture, cleavage, gemology

    1h 8m
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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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