GIA Notifies Trade of Potential Undisclosed Diamond Treatment
GIA believes that the treatment temporarily masks the body colour of the diamond, resulting in a colour grade that can be up to three grades higher than its actual grade.
The Institute has terminated client agreements with the companies that submitted the diamonds in question and has notified appropriate trade bodies.
The report numbers of the potentially treated stones are posted on GIA’s website. Anyone who has purchased or has access to any of these diamonds is asked to submit them to any GIA lab for a no-cost, expedited review.
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