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The synthetic diamond problem for fancy colour diamonds – Part I
Image Gallery (4 Images)
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Three modified chinese cubic HPHT presses used for the production of synthetic diamond.
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Two typical colored HPHT synthetic diamonds as they are available commercially since the late 1980’s. The sample on the left is a high temperature annealed yellow synthetic diamond and the sample on the right is an as-grown type IIb synthetic blue diamond. Image: Dr. Thomas Hainschwang.
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A 25-carat HPHT synthetic blue diamond crystal, grown by Andrei Katrusha at NDT in 2015/16. Image: Dr. Thomas Hainschwang.
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Search for Gemstones - Carnelian
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