This was a gift from my ex-husband purchased as a “congratulations” for achieving some milestones at a previous company I worked for. I recall, I received this at a Gaylord hotel while in Washington DC. 😔 I only work it maybe several times. It’s in beautiful condition, like new. Approximate Minimum length: 15 inches Approximate Maximum length: 16 1/2 inches Width: 1 1/4 inches Material: Crystals, Rhodium plated Clasp type: Lobster clasp 15” - 16.25” chain (extender)