Pyrite and Calcite on Galena from 9th of September Mine DC460 slab so it should not be

so it should not be displayed in direct sunlight

The top has been polished on its faces but the sides are all natural with very nice striations and etchings

Weight: 152 grams

and is also a property of minerals such as Lepidolite and Indian Sunstone

Weight: 615 grams

Pyrite and Calcite on Galena from 9th of September Mine DC460 slab so it should not bePyrite and Calcite on Galena Locality: 9th of September Mine, Madan, Smolyan Province, Bulgaria Approx. Weight: 592 grams Approx. Dimensions: 5 x 4 x 2" Acrylic display stand can be included upon request Collected from the 9th of September Mine in Bulgaria, this specimen has large, lustrous pyrite formations scattered among calcite. A wonderfully aesthetic specimen to add to your collection.