Marble,also in other languages marmi, marmor, marmer, marmersteen, marmeren, marmori, marbre, marmorieren, marmorn, márvány, marmur, gałka, marmurkować, marmurowy, mármore etc.is a metamorphic rock, composed of metamorphosized limestone. In its purest form, marble is crystalline white calcite. Most marbles, however, are infused with impurities such as dolomite,silica or clay, providing variations in color and significant movement. The base colors of marble range from white to black with a broad range of huges. Marble is significantly softer than granite and therefore subject to greater, wear and wearthering.