Here is a Mexican silver and black onyx face mask ring. The top part measures 3/4" X 1/2". Near the top part of the ring the shank is split into three sections with a bead on top of each and then it comes together as one. It is not stamped sterling but I'm quite sure that it is. The stamp may have worn off or maybe the ring was sized. It is a size 7. Excellent condition.
Mexican Silver & Black Onyx Face Mask Ring Size 7