GemNotes

MORE RUSSIAN SYNTHETICS ON THE WAY A new load of Russian synthetic colored diamonds will likely hit the U.S. market next month. Alex Grizenko, president of Russian Colored Stone Co. in Golden, Colo., says he will begin to market synthetic yellow, blue, pink and red diamond rough and polished in December and will add "demantoid garnet green" colored diamonds several months later. He also plans to market colorless rough and polished synthetics as demand warrants. The diamonds are produced by a former microelectronics facility outside of Moscow that worked on military projects until recently, says Grizenko. "Now they are undergoing privatization and looking for commercial projects," he says. The laboratory has worked with synthetic diamonds "for quite some time" using a process related to the standard Russian BARS method. The BARS method uses multiple chambers to apply the heat and
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