Beautiful cabinet specimen of chalcopyrite crystals perched on and nestled betewen bladed crystals of siderite. The chalcopyrite crystals are all sharp, brassy and bright, and measuer up to 1.5 cm. There are numerous small tennantite crystals on the piece, the largest of which is 2 mm. The piece is in excellent condition - absolutely no damage to anything central, a couple minor nicks to more peripheral crystals. The back of the piecs has been trimmed and shaped by a saw - not visible from the front. Gorgeous piece.