This is an open ring with zirconia purchased from ZOZOTOWN. I've used it 3-4 times. It's a ring with a cute design. Size: Inner diameter: Approximately 15mm (Equivalent to size 6-7) ☆ I also have other accessories for sale. You can see the items I have for sale by searching #kon_accessories. If you purchase multiple items, I will offer a discount, so please feel free to comment. Thank you very much.