Granite is a natural stone that is formed from molten lava and primarily composted of quartz. Like marble & limestone, granite is quarried from mines. It is stain-resistant, heat-resistant, scratch-resistant and comes in a full spectrum of colours. The grainy appearance in some blocks of granite come from the minerals that were mixed with the quartz when the rock was formed.
Quartzite is a natural that forms from sandstone. Pure quartzite is extremely durable and can not be etched with water or acid. Like marble, it is typically a naturally light-coloured stone, but pure quartzite is much harder and more durable than marble.