The Gem Show

Julia Griffith

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EARTH SCIENCES

Made for gemmologists. Sharing stories that help us understand the world of gems and gemmology.

16/11/2020

004 - Lab-grown diamonds that test as synthetic moissanite

Some near-colourless HPHT lab-grown diamonds have electrical conductivity and so will test as the diamond imitation "synthetic moissanite" instead of diamond using a number of diamond testers. At this period of time... this is not common knowledge so come learn all about it on this podcast episode.

11 min
10/11/2020

003 - Diffusion confusion

There is lots to learn about diffusion treatments in corundum and one thing that does not help matters is the terminology that is used; surface diffusion, lattice diffusion, bulk diffusion? In this week episode Julia discusses these terms and why she uses none of them.

15 min
06/11/2020

002 - Mining ancient riverbed deposits in The Gemfields, Australia

In this episode, we focus on the The Sapphire Gemfields of Queensland, Australia, and also discuss the extraordinary depths of ancient riverbeds deposits as well as the processes of mining these sapphires.

14 min
04/11/2020

001 - HPHT diamond synthesis and the importance of pyrophyllite

Have you ever wondered how so much pressure can be applied to the reaction cell in HPHT diamond synthesis? I did... In this first ever episode of The Gem Show, we explore the importance of pyrophyllite in the HPHT diamond synthesis process... and how this throws into question the marketing of some lab-grown diamond retailers.

11 min
TRAILER

The Gem Show (Trailer)

The Gem Show

23 sec

TRAILER

The Gem Show (Trailer)

The Gem Show

03/11/2020

•

23 sec

Made for gemmologists. Sharing stories that help us understand the world of gems and gemmology.

Creator

Julia Griffith
Years Active

2K
Episodes

5
Rating

Clean
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© Julia Griffith
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The Gem Show