Explore every episode of the podcast Facet Nation: A Gemmology Podcast
| Title | Pub. Date | Duration | |
|---|---|---|---|
| Gem Crystallography: Habits and Forms | 13 Oct 2025 | 01:01:15 | |
In 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 comprehensive overview of these essential concepts in gemmology. The episode concludes with a preview of the next episode, which will focus on the Beryl family of crystals. Takeaways Crystals have orderly arrangements of atoms that define their structure. Understanding crystal systems is crucial for gemmology. Symmetry plays a significant role in identifying crystal types. Crystals can be classified into closed and open forms based on their terminations. Twinning occurs when two crystals share a common orientation. Pseudomorphs are formed when one mineral replaces another. Polymorphs have the same chemical composition but different structures. Isomorphism refers to different minerals having the same crystal structure. Crystals can exhibit various surface markings that aid in identification. The next episode will focus on the Beryl family of crystals. Sound Bites "Crystals have orderly arrangements of atoms." "Understanding crystal systems is crucial for gemmology." "Get those sticks out, y'all!" Chapters 00:00 Introduction to Facet Nation 02:53 Exciting Developments and Listener Engagement 05:40 Understanding Crystals and Their Structures 10:53 Crystal Systems and Their Characteristics 18:48 Symmetry in Crystals 26:32 Crystal Forms and Their Descriptions 34:17 Understanding Crystal Structures 37:41 Exploring Non-Geometrical Crystal Habits 39:57 Surface Markings and Their Significance 44:10 The Fascinating World of Crystal Twinning 50:33 Pseudomorphs and Polymorphs Explained 53:01 Isomorphism and Its Implications 55:02 Crystallography: The Systems and Their Members | |||
| Gem Chemistry: Materials, Structure and Chemical Elements | 06 Oct 2025 | 00:50:34 | |
In 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, the significance of quartz, and the formation of minerals. They categorize gemstones into oxides, silicates, carbonates, phosphates, and organic materials, providing insights into their properties and roles in gemmology. Strap in people, this is a heavy one. Titles Exploring the Depths of Gemmology The Building Blocks of Gemstones Sound bites "Atoms are extremely small." "Carbon has a valency of four." "Carbonates are the hippies of the group." Chapters 00:00 Introduction to Gemmology and Episode Overview 03:08 Understanding Elements and Atoms 06:09 Subatomic Particles and Their Roles 09:03 The Periodic Table and Atomic Structure 11:52 Valency and Chemical Bonds 14:36 Oxidation and Its Importance 17:38 Types of Chemical Bonds 20:27 Crystal Structures and Their Significance 23:32 Minerals and Their Formation 26:15 Key Elements in Gemstone Composition 28:09 The Ubiquity of Quartz and Its Elements 31:54 Understanding Gemstone Composition 34:27 The Importance of Silicates 40:07 Exploring Carbonates and Their Characteristics 42:03 The Role of Organic Materials in Gemstones 46:17 Rocks and Their Complexities gemmology, chemical elements, atoms, subatomic particles, periodic table, valency, chemical bonds, crystalline structure, minerals, gemstone composition, oxides, silicates, carbonates, phosphates, organic materials | |||
| Corundum Part Two: Rubies, 'real' and otherwise | 29 Sep 2025 | 00:55:58 | |
Keywords In 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 testing and identification of rubies, the treatments that enhance their appearance, and the rise of synthetic rubies in the market. The conversation also touches on famous rubies and their stories, providing listeners with a comprehensive understanding of these precious gemstones. | |||
| Corundum Part One: All Hail Queen Sapphire | 22 Sep 2025 | 00:57:07 | |
In 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 behind famous sapphires like the Logan Sapphire. The hosts emphasise the importance of understanding gemstones and encourage listeners to appreciate their unique qualities. Takeaways:
keywords: corundum, sapphires, rubies, gemstones, gemmology, engagement rings, durability, crystal structure, varieties, famous sapphires | |||
| Observation, magnification and the amazing world of gem inclusions | 15 Sep 2025 | 01:01:18 | |
In 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 conversation also highlights the importance of inclusions and optical effects in identifying and appreciating gemstones, providing listeners with a comprehensive understanding of the gemmological process. Takeaways Observation is a key skill for gemmologists. Colour is a major factor in gemstone valuation. Lustre affects the visual appeal of gemstones. Transparency can indicate the quality of a stone. The shape and cut of a gemstone influence its beauty and value. Inclusions can tell a story about a gemstone's origin. Optical effects like Chatoyancy and Adularescence enhance a gem's allure. Using a loupe and proper lighting is essential for gem testing. Understanding diagnostic inclusions aids in gemstone identification. Gemmology combines science with artistry in evaluating stones. Titles The Art of Observation in Gemmology Unlocking the Secrets of Gemstones Sound bites "We are going to be talking all about observation today." "I had a cry too, I was on the corner of Black Horse Road." "Transparency is basically the question, can you see through it?" Chapters 00:00 Introduction and Exam Results 02:56 The Practical Gemmologist: Using a Loupe 06:01 Light Techniques in Gem Testing 08:21 Understanding Transmitted Light 11:02 The Importance of Colour in Gemmology 15:55 Exploring Lustre in Gemstones 21:01 Exploring Gemstone Lusters 24:21 Understanding Transparency in Gemstones 26:50 The Art of Cutting and Shaping Gemstones 38:26 Diving into Inclusions and Internal Features 42:33 Diagnostic Inclusions in Gemstones 49:02 The Importance of Non-Diagnostic Inclusions 49:03 Optical Effects and Their Significance 57:24 Future Topics and Closing Thoughts gemmology, gemstones, observation, lustre, inclusions, gem testing, color, transparency, shape, cut | |||
| The Gem Kit | 08 Sep 2025 | 00:48:44 | |
Summary: 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 everything from basic tools like tweezers and loupes to advanced instruments like refractometers and spectroscopes, providing insights into the art and science of gem identification. Takeaways
gemmology, gemmologist tools, practical gemmology, gem testing, gem identification, gem instruments, gemmology education, gemmology podcast, gem tools, gem analysis, gemology, gemologist | |||
| WTF is Gemmology? | 01 Sep 2025 | 00:35:41 | |
So 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? Summary In the inaugural episode of Facet Nation, hosts Lucinda Beeman and Simon Barber delve into the world of gemmology, sharing their personal journeys and experiences in the field. They discuss the importance of understanding gemstones for confident buying and selling, the defining characteristics of gems, and the educational paths to becoming a gemmologist. The conversation also touches on the community of gem lovers, the significance of cut in gemstones, and their favourite gems, all while aiming to entertain and educate listeners about the fascinating world of gems. Takeaways
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| Gem Durability: How hard are your gemstones? | 03 Nov 2025 | 01:07:54 | |
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 | |||
| Spooktacular 2025: The World's Most Cursed Gemstones | 27 Oct 2025 | 00:56:20 | |
In 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 these gems. Takeaways Halloween is a significant cultural event in America. The UK is slowly adopting American traditions like Halloween. Recent robberies in the gem industry highlight security issues. The Louvre robbery was a simple yet bold heist. Cursed gemstones have fascinating histories and folklore. The Black Orlov diamond is linked to multiple tragic deaths. The Bahia emerald has a history of misfortune for its owners. The Black Prince's ruby is associated with the downfall of monarchs. The Hope diamond has a legacy of tragedy and misfortune. Curses often stem from the act of stealing sacred objects. Titles Cursed Gems: The Dark Side of Beauty Halloween and the Haunting of Gemstones Sound Bites "Simon was the ringleader." "It's a bit weird." "The no hope diamond." Chapters 00:00 Halloween and Its Cultural Significance 02:56 Recent Robberies in the Gem Trade 05:42 The Louvre Robbery: A Closer Look 08:24 Hatton Garden Heist: A Shocking Incident 11:05 The Emotional Weight of Jewellery 13:18 Cursed Gemstones: An Introduction 15:45 The Black Orlov: A Cursed Diamond 20:30 The Curse of the Black Orlov Diamond 24:27 The Bahia Emerald: A Tale of Misfortune 30:04 The Black Prince's Ruby: A Royal Curse 38:31 The Legacy of Cursed Gems 38:53 Historical Figures and Their Legacies 41:03 The Curse of the Hope Diamond 54:18 Cursed Gems and Their Stories Keywords Halloween, gemstones, robberies, cursed stones, folklore, jewellery, history, spooky stories, gemmology, folklore, jewelry, gemology, diamond | |||
| Beryl: Emerald's mum and Bas's wife | 20 Oct 2025 | 01:06:23 | |
In 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 importance of understanding inclusions and localities in gemmology. With a mix of humour and insightful information, the hosts provide a comprehensive overview of this captivating gemstone family. Takeaways Sound Bites Chapters Keywords | |||