Sterling Silver Stud Post EarringsYou pick Size: 2mm,3mm,4mm,5mm6mm,7mm,8mm,9mm,10mm Metal: 925 Sterling SilverSize: Assorted Sizes, You ChooseStone: Cubic Zirconia (Clear)Shape: RoundColor: SilverButterfly Backing Solid Sterling Silver, NOT plated.Stamped 925 for Silver Purity.