Chalcedony (Var: Agate)
Rancho Borunda, Estacion Ojo Laguna, Ahumada Municipality, Chihuahua, Mexico
A 7.5cm by 7.2cm Laguna agate polished by, and in the collection of, Donald Volkman. Scanned by Karl Volkman. The specimen was mined in the late 1950's to early 1960's
© Karl Volkman 04/06