Lady's Platinum Filigree 2.50ct Tourmaline & Diamond Ring. Ring Size: 7 (Can be Resized to Fit Most Any Finger) Contains: 1 Cushion Cut Natural Tourmaline. Weight Approx: 2.50cttw, Color: Pink, Clarity: Transparent-LI. 106 Round Brilliant Cut Natural Diamonds. Weight Approx: 1.00cttw, Color: G-H, Clarity: VS1/VS2. As rubies and pink sapphires have greatly appreciated in price, so has the pink tourmaline. Why? Because it's a hard, durable stone and it looks the same as the pink sapphire. This stone has been fashioned in the old-fashioned way. It is called the "Cushion" cut, which gives the stone a tremendous amount of brilliance. It is fitted in a beautifully made platinum mounting with one hundred six fine white brilliant cut diamonds.