Beautiful Silver and Onyx Ring Size 5.5

This pretty ring is not marked sterling but I feel it is---it shines up like sterling and there is a maker's mark that is just about worn off and I cannot read it. The ring weighs 5.9g and can be worn as a regular ring or a pinkie ring. Very pretty feather-like swirls on the side. The onyx is shiny and without scratched. This is a good quality ring!