This is a rarity because of the combination of crystal style and crazy metallic luster with color saturation. It is a small miniature with the classic, but rare, pseudo-octahedral style of adamite crystals from this famous mine. Only a single pocket produced adamite of this style, AND luster. It is one of the most highly desired habits of adamite, in my opinion. The piece could easily be trimmed, and probably should be, to a pristine large thumbnail.