Gold screw studs earrings #1200499(Au-R)_CZ, Red Gold 585°, Zirkons . Stone: Zirkons Earrings are made of Solid 585° GOLD. Genuine 585° GOLD, Stamped 585 All Jewelry is marked “Common Control Mark” (CCM) according Hallmarking Convention Stone: Zirkons Type: Nails with nut Material: Rose gold