Bidspirit auction | Pt900 3.49ct Natural Black Opal

Pt900 3.49ct Natural Black Opal and 0.32ctw Natural Diamond Ballerina Ring W/Certificate - This ballerina-style cocktail ring is crafted from Pt900 platinum and features a central natural black opal. The opal is an oval cabochon weighing 3.49ct, exhibiting a vibrant blue and green play-of-color. It is secured in a four-prong setting and surrounded by an undulating, tiered halo of approximately 0.32ctw baguette-cut natural diamonds in a channel setting. The ring features a raised, open-work gallery and a tapered, polished shank. The interior of the shank is stamped with Pt900, indicating the platinum purity, 3 49, corresponding to the opal weight, and D032, indicating the diamond weight. The ring is accompanied by a Certificate of Gem Identification from the Japan Gemological Center, report number J278-002T243028. Opal: 11.48 x 8.80 x 5.62 mm (0.45 x 0.35 x 0.22 inches). Size: US 6.25