What you cannot see too well in the pics is how a few chalcopyrites from a later generation light up this specimen with an amazing rainbow iridescence. These and an earlier generation of crystals grew on a plate of quartz, with three quartz crystals elegantly dominating the back of the specimen. Two of the quartzes have had chalcopyrites grow on them, and partially engulfed them. 8.3 x 6.2 x 5.2cm