Minerals and gems are classified by their physical properties, including hardness, luster, color, density, and magnetism. They're also identified by the ways in which they break, or the type of ...
Most people know some very basic information about minerals, crystals, and gemstones, but likely wouldn’t be sure about what ...
Krotite is a cosmic relic, one of the oldest minerals in the Solar System, formed under fiery conditions in the early ...