Large Mexican Sterling order and Onyx "Eye" Brooch

This Brooch is unsigned but was tested sterling. In order the shape of an eye, a large oval of Onyx is surrounded by curls of sterling almost like lashes. There are 3 stylized teardrop dangles . It is large, 3 in. across by 3 1/4 in. long. Probably pre 1970 maybe much earlier since unsigned.

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