Calcite - Alzada, USA, 129 grams
Brown calcite with a stalactite-like formation, from a rarely offered US deposit for the species.It comes from a discovery by Bud Ehrle in the 1970s, in Alzada, Carter County, Montana, USA.This piece, with remnants of shell mother-of-pearl, measures 9.1 cm long, 4.8 cm wide and 2.1 cm at the...























