NovaDiamond Quits HPHT Business

After a year and a half of turning light champagne diamonds into fancy intense greenish-yellows using a high-temperature/high-pressure process, Novatek is pulling out of the gem business. Novatek, located in Provo, Utah, is the parent company of NovaDiamond, a subsidiary specializing in gem diamond enhancement. It seems that for some enhanced diamonds, specifically the pure yellow and orangey yellow HPHT diamonds, identification is difficult. NovaDiamond's HPHT diamonds were inscribed by EGL USA, but since inscriptions can be removed by repolishing, NovaDiamond could not eliminate the possibility that dealers might send repolished NovaDiamonds to major gem labs that could misidentify them as naturally colored diamonds. NovaDiamond created fancy colored gem diamonds by subjecting natural off-color diamonds to the intense pressures and temperatures found deep in the earth, yielding sto

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