Vintage Black Onyx and Marcasite in Sterling Silver925 Brooch Mid Century 1940’s

Beautiful Vintage mid century black onyx and marcasite in sterling silver 925 Brooch. Made in the 1940’s. It has every single Marcasite stone which for a piece this old is rare, it seems Marcasite usually has a few missing. This has all its in pristine condition. I didn’t clean it, for many people like it with the patina on it. Then you can either have with patina or clean it and make it shine more! Up to your preference. It’s so pretty! In excellent shape.