0.25 Carat (ctw) Round Diamond Removable Jackets for Stud Earrings 1/4 CT Only the jackets are sale for stud earrings. Inner Diameter is 6mm and Outer diameter is 8.5mm Can be fit with 5 mm Each Round shape Center Diamond. Satisfaction Guaranteed. Return or exchange any order within 30 days.. All our diamonds are conflict free. Dazzlingrock 90 Day Warranty - We stand behind our products. If you lose an accent stone or your setting is damaged during NORMAL wear, we will fix it for FREE. Please read our About us page for more info