Material: 316L Stainless Steel Size: Chain 40+4.5cm / black diamond 1X1.6cm, block 1.7X0.8cm Origin: California, USA The Stainless Steel construction of the necklace keeps it looking great for years of regular wear alongside your favorite jewelry. Each product packed with SOCALI premium pouch and box, together with silver cleaning cloth and card. Material Our products are made from the top-grade 316L stainless steel - a metal that is nickel-free and does not fade or blacken and 100% hypoallergen