Item Description: Set with 20cts in French Cut Blue Sapphires... Sapphires look to be synthetic. NICE platinum piece and a one of a kind find. Nice engraving details on the sides... Gram Weight: 12.2 grams.Powered by SixBit's eCommerce Solution. The item "Antique 1920s 20ct French Cut Blue Sapphire Platinum Tennis Bracelet" is in sale since Saturday, January 13, 2018. This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Bracelets\Gemstone". The seller is "oldtreasures333" and is located in American Fork, Utah. This item can be shipped worldwide.