Growth of High Pressure Synthetic Diamonds

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  • KANDA Hisao
    National Institute for Research in Inorganuc Materials (NIRIM)

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  • 高圧合成ダイヤモンドの成長 : 宝石素材

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This article summarizes growth of diamond crystal and color control of synthetic diamond. Growth technique is highly improved to produce 30 cts diamond and type II diamond. Yellow, blue, green and brown colored diamonds have been made, which depend on composition of alloy used as solvent and growth temperature. The colors are changed with annealing.

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