A sizable older chunk of native arsenic from Peru. Although not particularly flashy, these specimens are probably the best native arsenics to come from Peru—and they certainly represent a significant occurrence of the species, being every bit as good as the classic German or Czech pieces.  Of course these days, it is extremely rare to see such large plates of solid arsenic from the old localities-- not that the Peruvian ones are exactly easy to find now either, especially since Quiruvilca closed. .

 This piece displays good botryoidal from, and when viewed from the side you can see the many layers that make up the specimen.