This item was passed down from my mother and was purchased approximately 20-30 years ago. According to my mother, it's a marcasite (marcasite) and silver brooch, but the details are unknown as it hasn't been professionally identified. There is a hallmark on the back (appears to be 935). It has a subdued, silver-like color, and the back shows signs of tarnish and blackening. One stone is missing. It's a clip-type brooch. Size (approx.): 3.3 x 2.4 cm Will be sent via Nekopos, with anonymous shipping. Please check the photos and description carefully before purchasing. Instant purchase is welcome.