Sterling silver 925 over bronze sodalite ring size 7.75

Beautiful sterling silver over bronze, genuine sodalite ring size 7.75. This is stamped 925 however, I have tested it and there is a little spot on the back of the band that has been scraped for that testing where you can see that it is bronze under the sterling silver. It is a very small piece maybe about an eighth of an inch that has been scraped on the back of the band barely noticeable. So even though this is a genuine stone, I am selling it at a costume jewelry price, just due to the fact that it is not solid sterling silver.