QUARTZ

Quartz is crystallised silicon dioxide (SiO2), which is usually white or transparent, although it can be found in other colours if it comes into contact with impurities during its formation. It is one of the hardest, most abundant minerals found in nature – only diamond, sapphire and topaz are harder.

Characteristics and applications: because of its extreme hardness and resistance to acids, is suitable for both outdoor and indoor use, and manufacture of various types of products. Quartz is also the main component of Silestone.