12.4 x 10.4 x 5.4 cm. An AMAZING cluster of quartz crystals out of the collection of Ed David! These gemmy crystals are stacked upon one another as if by hand, with both terminations complete, sticking out on either side! The terminations on one side of the crystals are sprinkled with little yellow-tan muscovites. On the other side is a cluster of arsenopyrite (the quartz/arsenopyrite association is well-known from this locality). A show-stopper of a quartz specimen!