Which grading reports do you recommend?

We recommend the Gemological Institute Of America (GIA) grading reports issued after 1997 with the new cut grade and full plot (a diagram marking all of the stone's unique, microscopic characteristics and flaws), and the American Gem Society (AGS) grading reports. These reports are the most objective, consistent, and detailed.

The New GIA and AGS reports also fully analyze the cut of a diamond, compared with other reports that only disclose a diamond's color, clarity and carat weight. Cut represents up to 50% of the price of a diamond and 100%of its sparkle.

In addition, the GIA and the AGS only assess loose diamonds. They also have multiple gemologists evaluating each stone.