One of the hardest natural minerals, chemically inert, with a high melting point. Due to these properties, it is highly valued in many industrial applications, starting from glass industry, foundry, high tension insulators, dental industry, paints and coatings, plaster, engineered stone... The manufacture of quartz flour and fine powders with specified particle sizes requires separation processes in addition to iron-free milling. Using a combination of grinding and optical technologies, we are capable of producing quartz powders with particle sizes of 1 µm.