This specimen is a killer for the species, from a famous one-time set of small pockets found over 30 years ago at this now-defunct mine. Pieces of this quality dispersed immediately and now can be had only in the recycling of noted collections, since they were snapped up generally by such folks to begin with. This one features a particularly large rosette of beautiful, rich blue crystals perched on a small quartz crystal point as a natural pedestal in such a way as to resemble the leaves of an artichoke, radiating in several directions! There is a very small bit of wear on the left side of the upright cluster of crystals, but it does not detract from the display face and given the size and context of the rarity here, it simply doesn't matter much. The deep blue color is classic, and the tips are gemmy enough to transmit light (highly unusual!). This is therefore a superb thumbnail, and also important for the species. 2.2 x 1.4 x 1.1 cm