(via The Canadian Gemmologist, Vol.III, No.3, Spring, 1982) . I come in a variety of colors, almost any color in fact, though most people think of me as a green stone which is relatively inexpensive. I frequently show strong dichroism. In rough crystals, I am quite strongly striated parallel to the c-axis. They call me a hemimorphic crystal. What am I?
Answer: Tourmaline
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.
No comments:
Post a Comment