Yuan Zhizhong, Peng Mingsheng, Yang Zhijun. COLOUR-TREATED YELLOWISH-GREEN DIAMOND UNDER HIGH PRESSURE AND TEMPERATURE[J]. Journal of Gems & Gemmology, 2000, 2(2): 29-30,35.
Citation: Yuan Zhizhong, Peng Mingsheng, Yang Zhijun. COLOUR-TREATED YELLOWISH-GREEN DIAMOND UNDER HIGH PRESSURE AND TEMPERATURE[J]. Journal of Gems & Gemmology, 2000, 2(2): 29-30,35.

COLOUR-TREATED YELLOWISH-GREEN DIAMOND UNDER HIGH PRESSURE AND TEMPERATURE

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  • Received Date: April 11, 2000
  • Dark brown or light yellow and colourless diamonds can be also changed into vivid yellowish green or greenish yellow diamond by the same way as "GE POL" under high pressure and temperature. This kind of treated diamond has no distinct characteristics. At present they can't be effectively identified whether they are colour-treated diamonds or nature-coloured diamonds.

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