Pachacayo Mine, Junín, Peru
Yellow brown cabochons with agate-like structure, banded cabochons in many hues between yellow, yellow-green, light and dark brown were cut from stalactites from Pachacayo, between La Oroya and Tarma. The stalactites used as rough can be over 50 cm long, with diameters up to about 10 cm.J. Hyrsl (2012) Gemstones of Peru, p. 38