Use a spiral ring sizer for a ring that seems a little big or tends to twist.
These are made from a soft plastic that makes them very comfortable! You'll hardly know that it's there!
Three sizes available!
Small - adjusts the ring by approximately 1/4 size
Medium -adjusts the ring by approximately 1/2 size
Large - adjusts the ring approximately 3/4-1 full size
Price is for one spiral (shown in photo). Enough to cut and use for several rings.