782g Pyrite Cube Mineral Specimen july4 This piece has some gemmy

This piece has some gemmy crystals and a medium green coloration

Weight: 310g

but this particular piece has a slight green glow in daylight

Big Beautiful white base Rough Welo Ethiopian hydrophane opal mineral specimen with a beautiful play of color

782g Pyrite Cube Mineral Specimen july4 This piece has some gemmyBeautiful 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. 4. 0" x 3. 3"x 2. 8" Weight: 782 grams 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