664g Complex Pyrite Cube Cluster on Marl Apophyllite These interesting etched crystals were

These interesting etched crystals were only found in one vein so far and the have not produced and new material like this for a few years now

Under longwave UV this mineral fluoresces a bright orange yellow

This beautiful Tanzanite Crystal has a pretty color and an interesting etched crystal structure

This piece has a beautiful brownish green color and great crystal structure

664g Complex Pyrite Cube Cluster on Marl Apophyllite These interesting etched crystals wereBig and beautiful aesthetic pyrite cube Specimen from Spain. The pyrite cubes sit within the natural host rock and display very nicely. This locality's limestone (marl) matrix can dissolve in water, so the specimens matrix needs to stay dry for these pyrite cubes to stay in place. Locality: Navajn, La Rioja, Spain Measurement: Approx. 95mm x 85mm x 68mm Weight: 664 grams FYI: When mined, these pyrite cubes typically do not stay in place on the host