Diamond Ballerina Halo Cluster Cocktail Ring in PlatinumDiamond Ballerina Halo Cluster Cocktail Ring in Platinum. Ballerina Halo Rings create sparkle and movement in the shape of a tutu. This modern diamond cluster cocktail ring features a ballerina halo of diamonds in shimmering platinum. A sparkling collection of baguettes, marquise and round cut accent diamonds form the diamond halo. A cluster ring with impressive diamond clarity and brilliance. A single . 76 carat pear cut diamond decorates the center