Antique Gold & Diamond Solitaire Ring A.R. Ullmann Platinum Vintage Diamond Solitaire Engagement Ring Steven Sher Vintage 0.71ct Diamond Solitaire Ring Cynthia Findlay Fine Jewellery Vintage 0.71ct Diamond Solitaire Ring Cynthia Findlay Fine Jewellery. A timeless vintage solitaire ring set with a striking old brilliant cut white diamond. The central diamond measures approximately 6mm, estimated at 0. 75 carat, with colour graded between GI and clarity SI. The diamond is held in an eight claw setting measuring 6. 5mm, with an overall depth of 5. 5mm. Each shoulder is set with three small accent diamonds. 18 carat white gold (tested), this ring dates to approximately the 1930s. Hallmarks are not required for jewellery from this period. Ring size: M (complimentary resizing available) Total weight: 2. 7 grams Condition: Very good vintage condition A classic and elegant piece, perfect for an engagement ring or a special vintage jewellery addition.