107 - Very Fine GIA Certified 5.20 Carat Burmese Cushion Cut Sapphire and Diamond Ladies Ring Mounted in Platinum and 18 Carat Yellow Gold Shank. Size 6-3/4. Signed Plat. Accompanied by a GIA Certificate Stating the Center Stone Weighs 5.20 Carats and is a Natural Corundum Cushion Shape Sapphire from Burma with No Indications of Heat Treatment. Measuring 10.50 X8.80X 5.40mm. Shipping $20.00 (estimate $30,000-$40,000)