Lady's Platinum Filigree Sapphire and Diamond Ring. Ring Size: 6.5 (Can be Resized to Fit Most Any Finger) Contains: 1 Round Cut Sapphire Weight: 2.89ct, Color: Blue, Clarity: Transparent-LI. 4 Fancy Cut Diamonds Weight: 0.15cttw, Color: F-H, Clarity: VVS2-VS2. A very desirable Cornflower Blue natural Ceylon sapphire in a handmade, platinum, estate mounting. As a point of interest, Sapphire is second down on the Moh scale of hardness, right after Diamond, making it a tough stone. Not to mention that Platinum, the noble metal, further ensures that it lasts a lifetime.