Bob Jones was spot on. The information on kyanite, sillimanite, and andalusite was insightful.
Useful link:
https://www.rockngem.com/metamorphic-index-minerals
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 Metamorphic Index Minerals. Show all posts
Showing posts with label Metamorphic Index Minerals. Show all posts
Tuesday, July 07, 2020
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