Bidspirit auction | Vintage Platinum 6.75ct Natural Opal

Vintage Platinum 6.75ct Natural Opal and 0.31ctw Diamond Cocktail Ring - Vintage platinum cocktail ring featuring a large, oval-shaped natural cabochon opal. The opal is secured by four prongs and exhibits a varied play-of-color with green, yellow, and orange-pink flashes. It is flanked by two clusters of seven small round-cut diamonds totaling 0.31 carats. The setting is crafted from platinum with a decorative scrolled under-gallery and an openwork bridge design. The interior of the shank is stamped 6.75 Pt900 for the ring size and metal purity, and D0.31 for the diamond weight. size 7 10.1 grams