Identifying GE POL Diamonds

When the color-treated Pegasus stones (Pegasus Overseas Limited is the Antwerp entity marketing them) were released on the market by Lazare Kaplan International, the company said no one could tell them from normal diamonds, sparking an industry uproar. But now it seems the stones may have telltale signs after all. In this month’s Gems & Gemology, GIA is due to release information on how to detect the Pegasus process, but only in certain types of stones. “We think we’ve made some progress,” GIA’s Tom Moses says. “But it’s still an uphill struggle.” Meanwhile, after looking at a small number of GE-POL diamonds, JCK has uncovered what could be an identifiable feature in case the inscription is polished off. (All Pegasus diamonds are inscribed with the acronym “GE POL” by the GIA lab. “GE” stands for General Electric, which developed and owned the process, and
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