Silver cluster ring with crystal rhinestone center and mini diamonds, size 8

Silver cluster ring with simulated diamonds Size 8 It has a marking engraved on the inside but I cannot make it out even on 10x zoom range on my camera. I've shown pictures of the engraving at several angles but I just can't make it out. Maybe 925? If so, it is sterling silver. but I can't be sure. I've had this for many years in my jewelry box. I can't remember where or when I received it but I have never worn it. Never worn, like new, cocktail cluster ring