Very old and lovely dress clip with glittering Antique marquisite stones all over it. There is no 'Sterling' mark on it, but the front part of the clip, exclusive of the back does look like sterling silver to me. (the marquisites are set in this)It is very old, and I purchased it in England, where I was told it is 1920's. Very Art Deco. It is 1 3/8 inches long, and 1 1/8 inches across.