This is a real eye-catcher. The setting is a looping filigree. The large cabochon stone is either black glass or onyx. The stone measures approximately 1-3/8" x 1" and the pin is about 1-7/8" x 1-5/8".
This pin is signed Sterling Mexico 925. The pin has a nice patina. There is a tiny dent in the back, which in no way detracts from this pin. I just mention for full disclosure. This pin is in very good condition.
This pin will be so lovely on a black dress or suit, although it really would look good with any color!