Facet Nation: A Gemmology Podcast

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

10 Nov 2025

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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 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.TitlesThe Weight of Gems: Understanding Density and GravityGemmology 101: Weight, Density, and Specific GravitySound bites"Weight is crucial in gem pricing.""The importance of weight in gem pricing.""Carat weight affects the price per carat."Chapters00:00 Introduction and Welcome02:53 Engagement with Listeners05:14 Understanding Weight and Density in Gemstones10:33 The Importance of Carat Weight14:49 Price Per Carat and Market Dynamics20:18 Specific Gravity Explained25:11 Historical Context of Specific Gravity Measurement27:24 Eureka! The Principle of Displacement28:39 Hydrostatic Weighing: The Science of Density33:45 Heavy Liquids: Testing Gemstones at Home38:17 The Game of Sink, Swim or SuspendWeight 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

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3ª PARTE | 17 DIC 2025 | EL PARTIDAZO DE COPE

01 Jan 1970

El Partidazo de COPE

13:00H | 21 DIC 2025 | Fin de Semana

01 Jan 1970

Fin de Semana

12:00H | 21 DIC 2025 | Fin de Semana

01 Jan 1970

Fin de Semana

10:00H | 21 DIC 2025 | Fin de Semana

01 Jan 1970

Fin de Semana

13:00H | 20 DIC 2025 | Fin de Semana

01 Jan 1970

Fin de Semana

12:00H | 20 DIC 2025 | Fin de Semana

01 Jan 1970

Fin de Semana

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Facet Nation: A Gemmology Podcast

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

This episode hasn't been transcribed yet

Other recent transcribed episodes

3ª PARTE | 17 DIC 2025 | EL PARTIDAZO DE COPE

13:00H | 21 DIC 2025 | Fin de Semana

12:00H | 21 DIC 2025 | Fin de Semana

10:00H | 21 DIC 2025 | Fin de Semana

13:00H | 20 DIC 2025 | Fin de Semana

12:00H | 20 DIC 2025 | Fin de Semana

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