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 Post subject: Multicolour's Latest GemVineL Gem Treatments
PostPosted: Sun Aug 30, 2020 8:30 pm 
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Another great contibution from David Weinberg
Below, in the August 2020 edition of Gemvine, we look at some of the frequently encountered gem treatment processes and the stories behind them.
A unique Madagascan ruby is featured in the Relics & Rarities section. Special thanks to Richard W. Hughes, founder of Lotus Gemology laboratory, for photographs and information and Harvey Bamford, a Bangkok based gem cook for invaluable insights into details regarding commercial gemstones heat treatments.

http://www.multicolour.com/newsletters/ ... 0-2020.pdf


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 Post subject: Re: Multicolour's Latest GemVineL Gem Treatments
PostPosted: Mon Aug 31, 2020 4:50 am 
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Thank you very much for sharing, Barbra!

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