Filigree Green Stone Vintage Brooch

A really beautiful brooch with a large green fully faceted central stone encircled with gold tone filigree set with solid green cabochon stones , set in another layer of filigree set with fully faceted green glass tones. There are three dangle sections each set with a tiny faux pearl.  Overall size is 5cms x 6.5cms.  A firm roll over safety clasp to the back.  A recent arrival from a USA Estate sale with no known provenance but I suspect it is Czech made, and it is in very good condition.  Gift boxed by Vintageonline.