t is estimated that less than 3% of the round diamonds sold in the US today would qualify as "Ideal" under AGS grading standards. At James Allen however, over 90% of our customers choose diamonds from our "Signature Ideal", "Ideal" or "Premium" categories. All of our stones come with grading reports from either the Gemological Institute of America or the American Gemological Society Laboratory. These two organizations are the "gold standard" in diamond grading and the only option for discerning customers. No other company offers a finer collection of Ideal cut diamonds than James Allen.