This is an Agate necklace. It has a K10 hallmark. The color is gold, and the top has a transparent natural stone with a small diamond. (I've forgotten the stone name, so I don't know...) The total length is about 40 centimeters. I bought it several years ago and used it for a while, but I haven't used it recently and have been storing it. I didn't intend to sell it, so I threw away the sales certificate and box, but it is a genuine product purchased from a department store. It's simple and goes with any outfit, and I think it's very easy to wear ☺︎ It will be wrapped in bubble wrap and shipped simply. For those who understand home storage, Thank you.