A beautiful original Art Nouveau silver brooch set with an obsidian or glass cabochon. Wonderful organic form to the metal. The brooch is unmarked but tests as silver. It measures 2 3/8" across and approx. 7/8" in height. There is a small nick to the metal on the right side of the piece, a couple of minor scratches to the cabochon but overall the piece is in good antique condition.