Top, stamped K18, 0.25ct diamond Snake chain, 45cm, adjustable length Total weight (including chain and stone): 3.0g This necklace is very stylish. It was purchased at an exhibition and has unique features overall. The snake chain is smooth and comfortable to wear. Also, the gold, silver, and pink beads above the diamond are connected by a chain, making it very cute. There are three small diamonds on each side of the top diamond, and the 0.25ct diamond looks larger than it is. ✦The diamond is fixed to the necklace and does not move. Thank you very much. Also, please read my profile.