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Green Sapphire Identification: How to Tell Corundum by RI & Birefringence
Step-by-step gem identification of a medium light, yellowish-green faceted stone—RI 1.760–1.770, birefringence ~0.010, uniaxial optics. Learn the key tests. #gemologist #gemology #greensapphire Mia Aurei(@miaaurei). easy going - fyodor. Gem identification with me - Mystery stone 169 #gemologist #gemology #gemstone #gemidentification # ...
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