Lot of 3 rings

a lot of 3 size 8 silver rings, with black diamond and white diamond accents. There is one that is stamped, can't make out the stamp. I took the best picture that I could of it. the only ring that is stamped is the first one picture they all are size 8 (ring sizes are based off of my fingers and the sizes I wear, not 💯 on size)not sure of the metal not sure of the stones( CZ).