Snake Necklace Chain Bulk. STAINLESS STEEL NECKLACE CHAINS: All the gold filled jewelry making chains are made of high quality 304 stainless steel and is non-tarnish, very strong and durable, the 18k gold PVD vacuum plated necklace chain in the furnace ensures the chain is tarnish-resistant, not easy to fade and anti-allergic, safe for most skin types.