Corundum (Ruby) Arizona It is a type of

It is a type of fossilized ammonite shell that is primarily comprised of aragonite which is the same mineral contained in Mother of Pearl

The cubic form is more rare and found only in Navajún

Citrine is a variety of quartz whose color ranges from a pale yellow to brown due to a range of ferric (iron) impurities

formed in oxidized and weathered copper deposits

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Corundum (Ruby) Arizona It is a type ofThis 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