Quartz / Quartzite
Quartzite is defined as a hard, non-foliated metamorphic rock, which is formed from pure quartz sandstone through years of heating and pressure. When pure, quartz is always range in colour from white to grey but other colours shades such as red or pink are available depending on the various amounts iron oxide. Other impurities may impart additional colour shades including blue, green, orange and yellow.
This process of quartz formation makes it among the hardest in the market. It is also whether resistant making it suitable for covering walls as tiles, as flooring as well as for steps. It is also very good for kitchen countertops because it is harder and more resistant to heat, stains, chemicals as well as physical breakdown due to impact. Quartzite is quite expensive due to low availability and difficult in mining.