What material is this vintage chain made of?

This vintage chain is made of sterling silver, as indicated by the signed clasp.

What defines sterling silver jewelry?

Sterling silver jewelry is made from an alloy containing 92.5% pure silver and 7.5% other metals, usually copper, which adds durability while maintaining the silver's shine.

What is considered fine jewelry?

Fine jewelry is crafted from precious metals like gold, silver, or platinum, often featuring quality craftsmanship and lasting value, unlike costume jewelry which uses base metals and simulated stones.