860g Cubic Pyrite Crystal Specimen TanzaniaCrystal This opal has been polished

This opal has been polished on all sides and is a solid opal

It has completely natural untouched crystal faces and termination

and red across a translucent body

Measurement: 20mm x 16

860g Cubic Pyrite Crystal Specimen TanzaniaCrystal This opal has been polishedBeautiful 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. 137mm x 75mm x 72mm Weight: 860 grams FYI: When mined, these pyrite cubes typically do not stay in place on the host rock