Bidspirit auction | Pt900 1.322ct Natural Black Opal

Pt900 1.322ct Natural Black Opal and 1.00ctw Natural Diamond Cocktail Ring with Memo - This cocktail ring is crafted from Pt900 platinum and features a central oval cabochon natural black opal. The opal weighs 1.322ct and displays a vibrant play-of-color with prominent green and blue flashes alongside secondary orange and red spectral colors against a dark body tone. The center stone is secured in a four-prong setting and is flanked by shoulders pave-set with three rows of round brilliant-cut natural diamonds totaling 1.00ctw. The mounting includes an open-work under-gallery decorated with scroll and filigree motifs. The interior of the band bears the platinum fineness stamp Pt900, the center stone weight 1.322, and the total diamond weight D1.00. This piece is accompanied by a Colored Stone Sorting Memo from Gem Research Japan Inc. number CS-446191 which identifies the center stone as a natural black opal and confirms the carat weights. Ring size: 6 Center stone weight: 1.322ct Total diamond weight: 1.00ctw. 8 grams