Post subject: Re: Great time to study Gemology, Mineralogy & Petrology
Posted: Thu Apr 09, 2020 12:03 pm
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Joined: Sun Oct 16, 2005 12:22 pm Posts: 21602 Location: San Francisco
These links arrived via email today from Lotus:
World Sapphire Market Update • 2020 The world sapphire market has changed dramatically in the past 40 years. The authors review the famous sources of the past and look at the current situation in sapphire around the globe. Read more here.
Spinel Inclusions • An Exercise in Aesthetics To the jeweler, spinel is famous for its vivid colors. But for the gemologist, this gem is unlike any other. Its extreme hardness allows a fine polish. Couple this with single refraction, which eliminates the image blurring found in most other gems, and a varied landscape of inclusion subjects, and the result is an unparalleled canvas of delight for the photomicrographic artist.Read more here.
Madagascar Sapphire: Low-Temperature Heat Treatment Experiments Madagascar has become one of the world's top sources of fine blue sapphire in recent times. Lotus Gemology has conducted heat treatment experiments in our laboratory to help separate untreated and treated material. Read more here.
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