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CVD overgrowth on natural diamond
These two large synthetic diamonds were produced using HPHT growth methods by the Russian firm New Diamond Technology. The 4.30 ct specimen on the left has D color and SI1 clarity. On the right is a 5.11 ct sample with K color and I1 clarity. Photo by Wuyi Wang.
Skull memento mori locket ring
Aquamarine necklace
Gem Mountain mining site

零售商资源
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在校区商店购物
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Gems & Gemology
G&G Summer 2017 Edition
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