14K White Gold Square Shape Removable Jackets For Stud Earrings Only the jackets are sale for stud earrings. Inner Diameter is 3.6 mm and Outer diameter is 6 mm. Can be fit with 3 mm Each Princess 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