Stamped 925 round cut sterling silver costume jewelry studs

These are stamped 925 sterling and I did my best to get a good picture of that stamp! If it’s too unclear, I am happy to try again upon request 😊 I am totally unsure of the “stone” composition, only the posts. Comes from a smoke free home and includes jewelry box. It is NOT the original jewelry box, so the brand listed is incorrect, although sterling silver label is 100% accurate 😁