Rare Antique French Jeweller Brooch – Silver 835/1000, Marcasite stone – Leaf. This product data sheet is originally written in English. Rare Antique French Jeweller Brooch – Silver 835/1000, Marcasite stone – Leaf shape. Track Page Views With. Rare Antique French Jeweller Brooch – Silver 835/1000, Marcasite stone – Leaf shape Track Page Views With Auctiva’s Counter.