This is a Bloody Mary silver ring. but as it is an open ring. The image shows US 6.5-7 Japan size 13.5. so it is as shown in the image.
Bloody Mary Double Claw Ring #0611 US 6.5-7
Bloody Mary Mermaid Fin Double Pendant Top 925 #1224
bloody mary bloody mary kai ring cool color #0511
Bloody Mary Bison Pendant #0524
Bloody Mary Magnolia Pendant Top #0524
Bloody Mary Chain Water Rose #0315