PLATINUM 1.70 CT UNHEATED BLUE SAPPHIRE & DIAMOND RING: 1.70 CT unheated blue sapphire is set in Platinum and complemented with .54 CTW diamonds surrounding it and cascading down the split shoulders. Sapphire is unheated and GIA certified # 2205365252. Size 6.75. Weight 6.4 grams. Sold with current Florida Diamond Appraisers GIA graduates appraisal for $5950.