This is an AUTHENTIC Monica Rich Kosann Chain. This exquisite chain is a MODERN accent to your collection. This necklace is made by Monica Rich Kosann. EXQUISITE KEY design in rock crystal and accented with a single round oynx stone at the top. Beautiful piece worn alone or layered with other pieces. The two-toned collection by Monica Rich Kosann is a stunning combination of sterling silver and 18K gold, making every piece easy to match with favorites from your personal collection. Inspired by vintage pocket watch keys that men used to wind their pocket watches, this oval two-toned sterling silver and 18K yellow gold rock crystal key has black onyx accents, a pinstripe design, and is presented on a 36” oval link chain. The key charm itself measures 1 7/8"L (from top to bottom) by 1 1/8"W (at widest part.) The chain is made of 925 sterling silver. This was purchased from Neiman Marcus. This is BRAND NEW and NEVER USED nor NEVER DISPLAYED, but does NOT come with the original tag. This comes from a non-smoking home. The clasp is marked, "925 (for steeling silver) cursive M (for Monica Rich Kosann.") Pictures of actual item.