Ring K18 Size 12 This is a vintage item. It's an old piece. The inner diameter of the ring is about 16.5mm, which is approximately size 12. The stone's dimensions are approximately 10.2mm long, 8.2mm wide, and 2.5mm thick (these are approximate measurements). Total weight is approximately 2.05g. The stone has an orange-like color. The ring is stamped K18. There are some scratches. It looks beautiful, but since it's an old item, please refrain from purchasing if you are concerned about minor scratches or imperfections. I will be filming a video during packaging. If there are any problems with the item, please film a video from the moment of opening the package to provide evidence. This is to prevent item substitution. The item will be packaged in an old case. It will be shipped via Takkyubin Compact. If you have any other questions, please ask in the comments. Thank you for your consideration.