Peru

Sprays of transparent prismatic hexagonal quartz crystals (to 2 cm x 0.6 cm x 0.6 cm), with just a hint of gray, specked with tiny clumps of whitish calcite on base of dark gray to whitish massive quartz; few scattered cubic pyrites (to 5 mm edge); also some grains of arsenopyrite (?) in matrix

Purchased in November 2001