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TEMPORARY COLOR ENHANCEMENT: A POTENTIAL GAME CHANGER FOR INDUSTRY AND GRADING LABS
28 May 2015
The advent of a reversible (temporary) color enhancement treatment in the diamond market potentially presents a radical “game changer”, comparable to the discovery of the Yehuda Treatment in the early 1980’s, or the General Electric/Lazare Kaplan HPHT-color enhancements of the 1990’s. In these methods the color change is stable and permanent. A new treatment, that may cause an up to three grades change of color in diamonds that will revert back to its ORIGINAL color, may greatly impact the way the business is conducted. GIA scientists and other gemologists are working around the clock to discover the treatment method as well as the triggers that activate the reversal process. This DIB in a cautious manner looks at the little that is known so far. It’s a scary and quite unsettling story.

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