Gemology

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by Russell Shor • June 28, 2010
One of the most confusing and controversial aspects of diamond grading over the years has been the effect of internal whitish or reflective graining on clarity grades. ...»
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by Russell Shor
Tanzanite is an enormously popular gem, and the discovery of stones coated with a color-enhancing substance has generated controversy within the trade. ...»
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by Russell Shor
Burma (now known as Myanmar), it is generally believed, produces most of the world’s gem rubies by value. Yet the Burmese government’s violent response to protesters this fall has resulted in calls for further government and industry sanctions against gems mined there. ...»
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by Wuyi Wang, Kenneth Scarratt, Akira Hyatt, Andy Hsi-Tien Shen, Matthew Hall, and Robert Weldon • June 28, 2010
A new type of cultured pearl began entering world markets in 2000. Because of their attractive brown coloration, they came to be known as “chocolate pearls.” ...»

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