This gorgeous stone set in silver looks like a reward a sorceress gifted you for completing her exhausting quest chain*.

Ring Size: 8

*We can't personally get it to cast fireball but it does look very cool

Unless otherwise indicated, rings should be resizable by your local jeweler for a very modest cost (usually $20 or less, unless you're dramatically enlarging a gold ring). You can find your ring size with this online tool or get a free ring sizer here.