Crafted in 925 sterling silver, our chic earring jacket enhances your existing studs. Best with 5mm or 6mm round studs. Transform simple studs into lovely CZ sterling silver earrings with a feminine halo earring jacket. Easy, one-step process. Slip your stud earring post through the center hole for an instant new look. Perfect for various sterling silver studs. Inner diameter: 6mm x 6mm. Outer diameter: 10mm x 10mm. Post hole: .5mm. Lightweight at 1.7 grams per pair. Add beauty effortlessly to your sterling silver studs. Note: Earring jackets only. Earrings sold separately. Ideal for April birthdays.