Thumbnail, 2.6 x 2.3 x 1.6 cm
San Martin Mine, Chiurucu, Huallanca, Ancash Department, Peru

Elegance and superior definition make this one of the finer thumbnails I have seen from this mine. This cluster, with lustrous, gemmy blades up to 1 cm, is quite appealing. Being able to easily tell individual blades apart, and to appreciate their rich color and appearance, really makes the quality aesthetics what they are. Many finds here are of clumped, thick groups of crystals. It is fortunate that pieces this delicate have survived, though not nearly as many as we would like. From the mid-1990s.