Important Sapphire and Diamond Ring in Platinum Circa 1960's Featuring a Beautiful Marquise Cut Blue Sapphire weighing 5.10 carats (approximately) Fifty Six Diamonds weighing .80 carats (approximately) Very Fine and Unusual Filagree Work on The Underside Currently Size 7 1//2. It can be sized by us. Vintage Gia Certified Sapphire Ring, Marquise Platinum Gemstone Rings, Marquise Gemstone Platinum Rings, Collectible Sapphire Ring With Center Stone In Platinum, Vintage Gia Certified Sapphire Ring For Formal Occasions, Classic Marquise Sapphire Ring With Center Stone, Vintage Pear-shaped Diamond Ring With Brilliant Cut, Vintage Pear-shaped Brilliant Cut Diamond Ring, Vintage Platinum Diamond Ring With Gemstone