Opal Replacing Bivalve FossilOne of the great classics in terms of Australian Opal. The myriads of Opal found in Australia ranges from the finest Black Opals in the world to many precious multi color Opals including what I believe are the most iconic Opal fossil pseudomorphs extant. This piece was mined in the mid 1960s and features a well preserved bivalve mollusk shell which has been not only fossilized but partially replaced by gemmy multi color Precious Opal. The top portion

Hopeite is truly only known from a few world localities in fine crystallized specimens

A very nice

The specimen is in great shape overall

Francesco Bedogné (#150)

with a medium to light green color

light green Paravauxite crystals and tan colored Sigloite crystals on matrix

This miniature sized specimen features sharp

and I have only seen a scattered few of them on the market since that time

cream-colored Dolomite rhombs

2 cm Calcite scalenohedron

This particular piece features an absolutely beautiful

Specimen # BOL711B172