67g Pyrite Crystal Specimen matrix This specimen has multiple deep

This specimen has multiple deep purple crystals surrounding the piece

It appears that the opal only has a thin coating of the host rock that covers this piece and is almost all opal

Measurement:  21

Locality: Mogok

70ctMeasurements: 23mm x 8

67g Pyrite Crystal Specimen matrix This specimen has multiple deepBeautiful pyrite mineral specimen on the host rock from Spain. This locality's limestone 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. 46mm x 36mm x 32mm Weight: 67. 60g FYI: When mined, these pyrite cubes typically do not stay in place on the host rock unless buried deep within the matrix. Almost all of the on matrix pyrite