This gorgeous cluster ring is made of 18K Yellow with bezel-set of genuine AA to AAA green and blue tourmalines Approx. Shoulder width: 2 mm Approx. Shank Base Thickness: 1.8 mm Approx. Shank Base Width: 2 mm Metal Purity: 18k Yellow Gold Approx. Top Dimensions: 9 mm Primary Stone Type: Genuine Tourmalines 2 of 0.050 Ct -- 2 MM, Round Tourmaline Round Brilliant Facetting 4 of 0.090 Ct -- 2.5 MM, Round Tourmaline Round Brilliant Facetting 2 of 0.150 Ct -- 3 MM, Round Tourmaline Round Brilliant Facetting 2 of 0.320 Ct -- 2 MM, Round Tourmaline Round Brilliant Facetting * Also available in . Custom with birthstones or for engagement and family jewelry available. Please inquire.