PLATINUM 6.46 CT DIAMOND CHAIN ''Y'' NECKLACE: Hand made platinum necklace with the largest diamond being a European Round Cut weight approx. .68 Ct., rated SI1 in clarity and H color. The chain holds 33 round transitional cut and old European round cut diamonds. approx. 5.78 Ct., averaging VS-SI in clarity and H-I color. Sold with the Oct.'08 Atlanta Gemological's GIA graduates appraisal for $18,250.