A must read.
Useful link:
https://www.gia.edu/gems-gemology/winter-2016-danburite-luc-yen-mining-area-vietnam
P.J.Joseph's Weblog On Colored Stones, Diamonds, Gem Identification, Synthetics, Treatments, Imitations, Pearls, Organic Gems, Gem And Jewelry Enterprises, Gem Markets, Watches, Gem History, Books, Comics, Cryptocurrency, Designs, Films, Flowers, Wine, Tea, Coffee, Chocolate, Graphic Novels, New Business Models, Technology, Artificial Intelligence, Robotics, Energy, Education, Environment, Music, Art, Commodities, Travel, Photography, Antiques, Random Thoughts, and Things He Like.
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Showing posts with label Tim Ullmann. Show all posts
Showing posts with label Tim Ullmann. Show all posts
Tuesday, May 02, 2017
Wednesday, February 01, 2017
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