I received this as a gift, but I don't have the opportunity to use it, so I hope someone else can. It has a small design that can be easily matched with any outfit. Chain and top: K18WG Diamond (the stone on the upper left) and December birthstone Tanzanite. The chain length is 40cm. I have lost the warranty. Type... Necklace (pendant top + chain) Material... K18 (18k gold) Decoration... Diamond Decoration... Other stones Accessories... Box