Corundum (Ruby) Mica showcasing its classic cell-structure pattern

showcasing its classic cell-structure pattern in earthy reds

brittle mineral composed of lead

they are transparent and nearly colorless

and Northern Oklahoma

flakes or nuggets in placer deposits in recent to ancient stream and river deposits

Corundum (Ruby) Mica showcasing its classic cell-structure patternThis 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