Purchase Protection & Refund Policy

Gold chain necklace with herringbone links and spring ring clasp. Marking says NS as per photo Nakagawa Corporation is a prominent jewelry manufacturer and wholesaler based in Tokyo, Japan, globally recognized for producing premium jewelry components, chains, and findings. Founded in 1949, Nakagawa historical pieces are highly collectible. They are frequently identified by their signature "SN" or "N.S." hallmarks stamped inside a diamond or on the chain tags.