Bidspirit auction | Platinum Sapphire and Diamond Halo

Platinum Sapphire and Diamond Halo Cocktail Ring - A platinum cocktail ring featuring a central oval-cut blue sapphire surrounded by a cluster halo of fourteen round brilliant-cut diamonds. The sapphire is secured in a four-prong raised basket setting. The band is designed with split-shank shoulders that taper into a solid rounded shank. The interior of the band is stamped with a stylized maker's mark and the hallmark Pt850, indicating 85 percent platinum purity. The opposite interior side is stamped with the characters 109 and D018, representing the weights of the gemstones. Ring size: 4.25 Sapphire weight: 1.09 carats Diamond total weight: 0.18 carats Metal: Pt850 platinum. 3.3 grams