Pyrite Cube in Matrix Bruneau Jasper A polished specimen featuring white

A polished specimen featuring white and gray banding with a crystal center

Mohs hardness of 6 - 6

and blue coloring with a tan bark edge

A chrysoprase stone carving suitable for jewelry design

50 pc lot of assorted worry stones

Pyrite Cube in Matrix Bruneau Jasper A polished specimen featuring whitePyrite cubes in marl matrix from Navajn, Spain. These are natural pyrite minerals and are famous all around the world for their incredible formation. Originally discovered in 1965, the mine has been continually worked to this day. The chemical formula for pyrite is FeS2. The cube itself measures between 1. 5 cm and 2. 5 cm, and the whole cube in matrix is approximately 5 6 oz. The photo is representative of the material and does not necessarily mean