A huge size double terminated quartz specimen. Prism faces are showing parallel and echeloned growths, and multiple terminal faces in both sides. As it is very usual in Panasqueira’s big size quartz crystals it shows a delicate opalescent transparence but an excellent brilliance. To finish the specimen several groups of rounded and complex siderite crystals and inclusions of pyrite and sphalerite. THE MAIN CRYSTAL IS: 15,5 x 5,3 x 5,1 cm.