These are all stamped 925, but I believe they are nicer, plated costume rings, I could acid test but this will damage the band if plated I believe at least 3 are sterling, but I'm selling as a higher end costume lot of plated rings Stone makeup unknown Materials unknown Beautiful lot with variety! Paw ring approx size 8 Light blue bright small circle stone ring, approx size 8 Elongated teardrop mixed dark blue and teal ring, approx 7.75 Wider teal teardrop ring with geometric tribal inspired band, approx size 8 Faux opal wide teardrop style ring, approx size 8 Silver toned costume wedding band bezel set approx size 7 Costume oval green larger marble colored stone, approx size 8.25 Small green oval marbled circle stone ring approx size 6