GemPen is a portable instrument for jewelers and gemologists providing the ability to screen diamonds, rubies and sapphires for synthetics and treatments. If doubtful, always consult a reputable gem testing laboratory.
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 GemPen. Show all posts
Showing posts with label GemPen. Show all posts
Sunday, September 27, 2020
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