MARBLE
Marble is a metamorphic rock composed mostly of calcite, aragonite and/or dolomite crystals. It forms when existing limestone deposits are subjected to changes in heat, pressure or chemicals through a process called solid-state recrystallization. Marble has been used as a building and sculpting material for centuries; if you've ever seen the Taj Mahal or Venus de Milo, you've seen an example of marble in action.
