Solid platinum and a handmade 1920s filigree ring. OLD PLATINUM is RARE and this has a serial number on the side. Stone: Natural Diamond and Blue Sapphires. Powered by SixBit's eCommerce Solution. The item "Antique 1920s $20,000 2ct Old Euro Diamond Blue Sapphire Platinum Filigree Ring" is in sale since Monday, February 8, 2021.This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Rings\Diamond". The seller is "oldtreasures333" and is located in American Fork, Utah. This item can be shipped worldwide.