Corundum (Ruby) hematite while calcite adds structure and

while calcite adds structure and shine

Found in Afghanistan

5 and weighs 9

375" and weighs 42

25” x 2” and weighs 2

Corundum (Ruby) hematite while calcite adds structure andThis specimen is a red variety of corundum (AlO), colored by trace amounts of chromium that produce its distinctive ruby tone and vivid red fluorescence under ultraviolet light. While gem quality ruby represents the transparent form of this mineral, this piece showcases the same composition and glowing energy in a natural crystalline state. Corundum ranks 9 on the Mohs hardness scale and is found in metamorphic and igneous environments worldwide. This