Oxidized Pyrite with Quartz – Hekou, Yunnan, China – 458g Schiller When exposed to a polarized

When exposed to a polarized light source

The smoky amethyst has very deep color

A standout

A beautiful Tanzanite crystal specimen displaying natural unheated violet-blue color on what appears to be a slightly greenish prehnite from Tanzania

The pyrite cubes are grown together at different angles giving this piece a unique look

Oxidized Pyrite with Quartz – Hekou, Yunnan, China – 458g Schiller When exposed to a polarizedA visually striking specimen featuring dark metallic crystals set among a dense cluster of quartz from Hekou, Yunnan, China. The larger crystals display deep reddish brown to black coloration and retain the sharp crystal form of pyrite. While the exact identity of these crystals has not been confirmed, they are believed to represent oxidized pyrite based on a cut section from a similar specimen that revealed something that looks like fresh metallic