These rings are made from 22g argentium silver sheet that was run through a rolling mill to achieve the pattern. A patina was applied to accentuate the pattern.
The ring fits a size 6. I also have it in a size 8.5 - see Product Options to order the larger size.
Argentium silver is very tarnish resistant, however a small black anti-tarnish pad comes with each ring. It should be stored with the ring when not worn.