Our Guarantee »

AGS Graded Loose Diamonds

AGS, also known as American Gemological Society, is located in Las Vegas. The AGS diamond grading scale is considered to be as stringent and consistent as that of GIA. AGS was the first diamond grading laboratory to come out with a cut grading system for the round brilliant diamond, modeled on the mathematical formula designed by Marcel Towlkowsky. Known by AGS terminology as “Ideal” cut, these round cut diamonds are designated as such according to face up light performance, ideal symmetry and ideal polish.

In an effort to measure a diamonds light refraction and face up light performance, AGS researchers introduced the ASET scope technology, which pinpoints and reports a diamonds light refraction, distribution, and intensity. Combined with a personal evaluation by an experienced and knowledgeable diamond vendor, consumers shopping for diamonds can gain an extra measure of confidence that they are purchasing a high-quality diamond.

Stone Shape

Need Some Advice?  We're here to help
Shape Carat Cut Color Clarity Price  Advanced » « Basic
Round2.56IdealFVS2 $30,958
See Recommended Diamonds


At Excel Diamonds, we feature thousands of certified loose diamonds in all different shapes, qualities and sizes, including pear shape diamonds, round diamonds, ideal cut diamonds, hearts & arrows diamonds, princess cut diamonds, radiant cut diamonds, heart shape diamonds, marquise diamonds, cushion cut diamonds, asscher cut diamonds, oval cut diamonds and emerald cut diamonds. Our loose diamonds have been certified and graded by the foremost authorities in Gemology; GIA and AGS. A GIA certified loose diamond, or an AGS certified loose diamond, is your guarantee of the highest standards and accuracy in diamond grading.