From a Florida estate, this is a pretty vintage necklace pendant ~ brooch made with sterling silver in Mexico. It is set with a large black stone with a tiny bit of golden brown highlights. It's hallmarked, Hecho en Mexico, 925, DFU??. The last two letters are hard to make out..
Measurement is approximately 2 inches long. Weight is 16.8 grams
It's in very good condition. There is no damage to mention. The pin works fine.
I do have other vintage linens, lace, fabric and jewelry on auction and am happy to combine shipping.