Vintage Mexican sterling silver carved stone face tribal mask pendant brooch pin

Elevate your style with this unique vintage pendant brooch pin. Made of sterling silver, it features a intricately carved stone face in a tribal mask design. Perfect for adding a touch of culture and sophistication to any outfit. I do not know what the stone is. I do not clean any jewelry.It may need clean.See the photo there's a little bit of a green Patino on it.I have not tried to take it off boxS