Locality: Uchucchacua Mine, Oyon Province, Lima Department, Peru
Size: 47 mm x 35 mm x 39 mm (1.9 in. x 1.4 in. x 1.5 in.)
Weight: 84 g (2.9 oz.)
Specimen consisting of crystals of polybasite and acanthite, two silver sulfides, on matrix. The polybasite shows a dark red internal color in some areas under bright light.