How Marble is Created
Marble is an old seabed that has been crystallized by heat (volcanic) and pressure over the course of several thousand years. This metamorphosis from the seabed mud into stone put marble in the metamorphic family of rocks. It is quite common to find fossils of sea life in marble. Marble is crystallized limestone. The main component in both marble and limestone is calcium. The age of marble is usually measured in thousands (or tens of thousands) of years. Unlike granite whose age is measured in millions (or billions) of years. The veining in marble is caused when the mud bed (or limestone) is slowly heated and pressurized and certain components are squeezed out. Color was determined by different chemical compounds in the seabed at the time the stone was formed.