Bidspirit auction | Platinum Oval Opal and Diamond

Platinum Oval Opal and Diamond Cocktail Ring - This platinum cocktail ring features a large centrally mounted oval cabochon-cut natural opal. The stone exhibits a vibrant play-of-color with flashes of green, orange, and yellow throughout a translucent body. The opal is held in a four-prong setting and is surrounded by a tiered halo of small round brilliant-cut diamonds. The mounting includes an ornate openwork undergallery with scrollwork and filigree-style details. The shank is designed with polished split shoulders that taper into a solid band. The interior of the band is stamped with the marks 1259, Pt900, and 0.29. The Pt900 mark indicates 900-grade platinum, and the 0.29 mark indicates the total carat weight of the accent diamonds. Ring size: Approximately US 7 Total diamond weight: 0.29 carats. 12.4 grams