Rare Vintage Cartier Deep Blue Sapphire 18k Yellow Gold Bypass Ring. Stunning yellow gold ring set with 2 fine deep blue oval cut sapphires. Fine jewellery houses like Cartier only use the finest of gemstones in their jewellery and these sapphires are no exception. Two excellent quality sapphires with fine colour and excellent cut and clarity. Both sapphires measure approx. 6x4mm. The ring is signed Cartier 750 with serial numbers and a French eagle gold hallmark. Ring size UK M 1/2 - US 6.5…