.925 solid Sterling Silver, Hallmark of .925 is stamped on end ring link 1.0mm x 18 inches, Spring Ring Clasp Made in Italy, Nickel Free - not plated with any other metals. Popular and durable Pendant chain in Box link style Complimentary gift box included This popular 18 inch Sterling Silver Box Chain can be worn alone or strung with your favorite pendant and adds a nice classic touch to any outfit. The unique box link causes the chain to sparkle when worn. *Easy care: This chain can be polished if need be, with a simple cleaning cloth found in all grocery and department stores, and on amazon.