This brand new chain was acquired from a jeweler's estate. It was part of his store stock. The chain is crafted of solid sterling silver .925 and is plated in black ruthenium, a platinum group metal, to give it a high-quality dark finish. The chain is 18" in length, 4mm wide, weighs 19.80 grams and features a sturdy lobster clasp. It is marked 925 ITALY.