Crafted from 14K gold over sterling silver, our Demi-Fine pieces are future keepsakes meant to be layered and worn every single day. These sparkly studs feature a bezel-set cubic zirconia stones. - 4 mm x 4 mm. - Sterling silver. - Sterling silver posts are naturally soft due to the high silver content (just bend 'em back into shape if they get out of whack). - Nickel-safe. - Imported.