BERRICLE Italian Yellow Gold Flashed Sterling Silver Omega Chain Necklace 1.5mm METAL: yellow gold flashed .925 sterling silver, stamped 925, high polished finish, nickel free. MEASUREMENTS: CHAIN: 18 inch in length, 1.5mm in width, lobster claw clasp STYLE: This chain necklace's exquisite shape and simple flair will compliment your style gracefully. GIFTING: Comes with FREE BERRICLE signature jewelry box and is ready for gifting.