GIA Recalls 424 Grading Reports In Undisclosed Treated Diamond Case

Rapaport reports GIA is recalling 424 diamond grading reports in the case of some 500 diamonds of which GIA suspects that they were treated with a process that temporarily improved their color by up to three grades. A full list of the recalled grading reports, the companies submitting the diamonds, the shape, size, color and clarity of the diamond can be downloaded here.