Quartzite was once pure quartz sandstone that has been exposed to high temperatures and pressures within the earth and then was transformed into Quartzite. Quartzite can come in many different colors depending on how much iron oxide and other minerals have made their way into the stone. Quartzite is very durable and be even harder than granite. It can also withstand high temperatures and will not easily stain. Quartzite is a beautiful option for kitchen countertops and other applications.