Marble and granite are both quarried from the earth, however, they are quite different. Granite is a stone formed from volcanic material such as magma. Over time, the intense heat and pressure form the stone. Marble as well as limestone, onyx and travertine start out as sediment at the bottom of bodies of water and may have fossils embedded within them. The accumulation of sediment over a million of years along with heat and pressure, hardens into stone.
Engineered quartz is a man-made product. It is formed from 92-95% quartz chips, one of the hardest minerals on the earth. These quartz chips are then combined with resin and pigment to produce a slab of stone consistent in appearance.