Jewelry Blog

The Gemological Institute of America (GIA) has devised a set of guidelines to grade diamond color. The color of graded diamonds is compared to the color of control stones, preselected gems of a specific color.

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This entry was posted on Sunday, March 2nd, 2008 at 6:03 pm and is filed under jewelry news. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.