This is an artisan made estate sale find.  A carved goldstone face surrounded by brutalist style silver vines in a cage-like setting with prongs.  Estimated age is from the 1970's, possibly 80's.  The original owner traveled a lot, so it's likely from outside the US.
This brooch is 2" long and 1" wide and weighs approx 20 grams.

The silver is not stamped with 925 but cleaned up just like sterling and does not react to a strong magnet.
No artist signature.

In very good vintage condition.

Unknown maker or country of origin.