Marble is a metamorphic stone, which means that it is a rock that changes composition over time from one rock to another. In marble’s case, limestone or dolomite are softened over time under conditions of intense heat and pressure, and then are recrystallized as marble
Marble is a rating of between 2 and 5 on the Mohs scale of hardness for rocks and minerals, which means that it is a comparatively soft stone.
Marble is available in a rainbow of colors from pink, red, grey, green, brown and even black. Veined, streaked and other colored marbles are created from mineral impurities present when marble is formed, including sand, silt, clay and iron oxide.