0.15 Carat (ctw) 10K White Gold Round Diamond Ladies Halo Style Stud Earrings Jackets. This lovely diamond Jackets feature 0.15 ct white diamonds in Prong setting. All diamonds are sparkling and 100% natural. All our products with FREE gift box and 100% Satisfaction guarantee. Only the jackets are for sale. Inner Diameter is 0.17 Inch and Outer diameter is 0.26 Inch. Can be fit with 3 mm Each Round-Cut Center Diamond. SKU # K4193-10KW.