18K SAPPHIRE, OPAL & TURQUOISE RING: 18K yellow gold ring centers one oval shaped mixed cut sapphire, approx. 1.80 Ct. Two oval cabochon cut opals, approx. .50 Ct. and six 3.50 mm cabochon cut pieces of turquoise. All stones are prong set. Weight: 16.1 grams. Size: 6