Dims: 0.58x0.54x0.44" (1.47x1.36x1.12cm)
Wt: 27.6ct (5.52g)
Akadanunura, Eschizen Province, Japan
This thumbnail specimen is a granular nodule of arsenic crystals. Except for a spot or two of damage, it has tarnished to a dark brown, nearly black color. It is nearly spherical with a rather bumpy texture, but I can not see any evidence of a botryoidal growth. Examination with a loupe reveals that some of the shiny metallic reflections are the arsenic where it was damaged but not yet tarnished, while other spots appear to be tiny crystals of another mineral, possibly arsenopyrite. Considering that there are no obvious, well-formed crystals of arsenic, this is still a rather nice specimen.