This is a pendant top with a clover pattern in the center, set with glass or a synthetic stone. The engraving on the border is also beautiful. The weight is about 4 grams on a kitchen scale. It is stamped "silver950". It is old, but I don't know the details such as the era. It does not have a bale, so please use your own findings. The metal has some tarnish. The lines carved downwards from the clover likely represent the clover's stem.