25ct in VS G Diamonds. 1.15cts total and solid Platinum. Great looking piece and rare. Gram Weight: 3.5 Grams.Powered by SixBit's eCommerce Solution. The item "Antique 1940s $5K CERTIFIED NO HEAT Blue Sapphire Diamond 1.15ct Platinum Ring" is in sale since Sunday, November 24, 2019. This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Rings\Gemstone". The seller is "oldtreasures333" and is located in American Fork, Utah. This item can be shipped worldwide.