Pro Jewelry .925 Sterling Silver "Multicolor Rainbow Crystal Star" Stud Earrings for Children & Women ECCST 22 (PP 9) Quantity: 1 Pair Size: 8.6mm x 9.1mm Post: 11.6mm conversion : 1 inch = 25.4mm or 1mm = 0.0393 inch Hypoallergenic / Nickel Free Material: Sterling Silver 925 Stamped