Marble is a metamorphic rock, made of re-crystallized minerals (primarily calcite and dolomite (aka mountain
''jade'')). This makes marble a member of the carbonate family, cousin to limestone and magnesite.
Marble can be a material on its own, or as a host rock for gemstones such as ruby, sapphire, spinel and more.
Due to its recrystallization, newly split marble has a subtle sparkle (much like table sugar) from the millions of
cleavage faces freshly exposed to light and air. Marble gemstone materials can include a range of trade names,
such as mountain "jade," aqua terra "jasper," zebra "jasper," grain stone, red "malachite," Italian "onyx" and
Marble isn't technically mined--it's quarried, like other industrial materials such as granite and sandstone. Lower quality marble materials are crushed and used as aggregate in highways, railroad beds, building foundations and other construction. Pure white marble that cannot be turned into décor items is powdered and used as a coloring agent and filler in cosmetics, paper, whitewash and more.
Marble is usually a light-colored rock, the purest form being completely white. Colors in marble are created by