Facet Nation: A Gemmology Podcast
Episodes
32. Causes of Gemstone Colour: Dispersed Metal Ions
20 Apr 2026
Contributed by Lukas
Send us Fan MailThis episode explores the science behind gemstone colours, focusing on dispersed metal ions, valency states, atomic environments, and ...
31. Interview: Ian Dun FGAA FGSGA, Federal President Gemmological Association of Australia
13 Apr 2026
Contributed by Lukas
Send us Fan MailJoin us as we are joined by Ian Dun, president of the Gemological Association of Australia. Discover insights into gemstone grading, A...
30. Colour: Physical Optics and Colour Phenomena
30 Mar 2026
Contributed by Lukas
Send us Fan MailExplore the fascinating world of physical optics in gemstones, focusing on iridescence, thin film interference, and the science behind...
29: Organics: Coral. Don't bleach it! Or Maybe you should.
23 Mar 2026
Contributed by Lukas
Send us Fan MailThis episode explores the fascinating world of coral, its history, types, and significance in gemmology. Hosted by Simon and Lucinda, ...
28. Colour: Pleochroism and Colour Filter Gem testing
16 Mar 2026
Contributed by Lukas
Send a textIn this episode, Lucinda and Simon explore the fascinating world of gemmology instruments, focusing on colour filters like the Chelsea colo...
27. Jadeite: A Cultural Titan
09 Mar 2026
Contributed by Lukas
Send a textThis episode explores the fascinating world of jadeite, covering its geology, colours, treatments, cultural significance, and the latest ge...
26. Interview: Andrew Geoghegan - Jewellery Design, Branding and Keeping it Real
02 Mar 2026
Contributed by Lukas
Send a textJoin us as we explore the journey of jewellery designer Andrew Geoghegan, from childhood fascination with treasure to creating innovative c...
25. Interview: Wim Vertriest - GIA Field Gemmology, Gem Identification and Mozambique Rubies
23 Feb 2026
Contributed by Lukas
Send a text Join us as Wim Vertriest, head of field gemmology at GIA, shares his journey from geology to gemmology, insights into Mozambique rubies, ...
24. Colour: The Spectroscope and Selective Absorption in Gems
16 Feb 2026
Contributed by Lukas
Send a textIn this episode of Facet Nation, Simon and Lucinda delve into the fascinating world of gemmology, focusing on the spectroscope and its crit...
23. Colour: An introduction
09 Feb 2026
Contributed by Lukas
Send a textIn this episode of the Facet nation gemmology podcast, Lucinda and Simon explore the intricate world of colour in gemstones. They discuss t...
22. Interview: Justin Prim - gemcutter, author, teacher and historian
02 Feb 2026
Contributed by Lukas
Send us a textIn this episode of Facet Nation, hosts Lucinda and Simon welcome gem cutter Justin K Prim, who shares his fascinating journey from music...
21. Interview: Jeff Hapeman, Earth's Treasury. Montana Sapphires and more
26 Jan 2026
Contributed by Lukas
Send us a textIn this episode of Facet Nation, hosts Lucinda and Simon interview Jeff Hapeman, owner of Earth's Treasury, who shares his unique j...
20. The Refractometer: Gem testing and how it works
19 Jan 2026
Contributed by Lukas
Send us a textIn this episode of Facet Nation, Simon and Lucinda delve into the intricacies of the refractometer, a crucial tool for gemmologists. The...
19. Gemmology Exam Preparation: What to expect
12 Jan 2026
Contributed by Lukas
Send us a textIn this episode of Facet Nation, Lucinda and Simon discuss their experiences preparing for and taking the Gem-A exams, particularly focu...
18. The Best Kept Secrets of Spinel
05 Jan 2026
Contributed by Lukas
Send us a textSummaryIn this episode, Lucinda and Simon explore the fascinating world of spinel, a gemstone often overshadowed by rubies and sapphires...
17. Interview: Rosie Young. Lab Gemmology and all things Sunstone
22 Dec 2025
Contributed by Lukas
Send us a textIn this episode of Facet Nation, hosts Simon and Lucinda chat with Rosie Young, a lab gemologist at GCS Lab. Rosie shares her journey fr...
16. Light & Gem Testing Instruments: The Polariscope
15 Dec 2025
Contributed by Lukas
Send us a textIn this episode of Facet Nation, Simon and Lucinda explore the intricacies of gemmology, focusing on the polariscope and its significanc...
15. Live Episode - Tanzanite - The Gem and Mineral Show London
08 Dec 2025
Contributed by Lukas
Send us a textIn this live episode of Facet nation, hosts Simon and Lucinda share their experiences at the London Gem and Mineral Show, where they dis...
14. Light and Optics in Gemstones
01 Dec 2025
Contributed by Lukas
Send us a textIn this episode of the Facet nation podcast, Simon and Lucinda delve into the intricate world of light and optics as they relate to gemm...
13. Interview: Video Game Gemstones and Precision Gem cutting with Arya Akhavan
24 Nov 2025
Contributed by Lukas
Send us a textIn this episode Lucinda and Simon speak to gem cutting pioneer Arya Akhavan, his trademarked gemstone cuts; the Void Reaver and the Lege...
12. Light and Wave Theory - A History
17 Nov 2025
Contributed by Lukas
Send us a textIn this episode of the Facet Nation: A gemmology podcast, hosts Lucinda and Simon explore the intricate relationship between light and g...
11. Gem weight and Specific Gravity: How heavy are your gemstones?
10 Nov 2025
Contributed by Lukas
Send us a textIn this episode of the Facet nation podcast, Simon and Lucinda delve into the intricate world of gemmology, focusing on the concepts of ...
10. Gem Durability: How hard are your gemstones?
03 Nov 2025
Contributed by Lukas
Send us a textIn this episode of FacetNation, Lucinda and Simon delve into the essential aspects of gem durability, focusing on hardness, toughness, a...
9. Spooktacular 2025: The World's Most Cursed Gemstones
27 Oct 2025
Contributed by Lukas
Send us a textIn this episode of Facet Nation, Lucinda and Simon explore the spooky side of gemstones, discussing Halloween traditions, recent robberi...
8. Beryl: Emerald's mum and Bas's wife
20 Oct 2025
Contributed by Lukas
Send us a textIn this episode, Lucinda and Simon dive deep into the fascinating world of Beryl gemstones, exploring its various types, including Emera...
7. Gem Crystallography: Habits and Forms
13 Oct 2025
Contributed by Lukas
Send us a textIn this episode of Facet Nation, Simon and Lucinda delve into the fascinating world of gemmology, focusing on crystals and their structu...
6. Gem Chemistry: Materials, Structure and Chemical Elements
06 Oct 2025
Contributed by Lukas
Send us a textIn this episode of Facet Nation, Lucinda and Simon delve into the foundational aspects of gemmology, focusing on the materials and struc...
5. Corundum Part Two: Rubies, 'real' and otherwise
29 Sep 2025
Contributed by Lukas
Send us a textKeywordsrubies, gemology, birthstones, Myanmar, treatments, synthetic rubies, famous rubies, gem identification, corundum, gemstone qual...
4. Corundum Part One: All Hail Queen Sapphire
22 Sep 2025
Contributed by Lukas
Send us a textIn this episode, Lucinda and Simon delve into the fascinating world of corundum, exploring sapphires and rubies. They discuss the chemic...
3. Observation, magnification and the amazing world of gem inclusions
15 Sep 2025
Contributed by Lukas
Send us a textIn this episode of Facet Nation, Lucinda Beeman and Simon Barber delve into the world of gemmology, focusing on the essential skill of o...
2. The Gem Kit
08 Sep 2025
Contributed by Lukas
Send us a textSummary:In this episode of Facet Nation, Simon and Lucinda delve into the practical side of gemmology, focusing on the essential tools e...
1. WTF is Gemmology?
01 Sep 2025
Contributed by Lukas
Send us a textSo 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 ...