TIFFANY & CO DIAMOND SOLITAIRE RING: 18k yellow gold ring with the solitaire diamond set in platinum. The diamond is an old European round cut .70 Ct diamond of VVS2 clarity and J color. Mounting is signed Tiffany & Co. Size 6.5. Weight 2.1 grams. Sold with current Florida Diamond Appraisers GIA graduates appraisal for $3200.