White Quartz Lumps Supplier Manufacturer Wholesaler Exporter From Jaipur, Rajasthan, India. Quartz is one of the hardest yet abundantly available mineral found in earthâ??s crust. In contrast to its ease of availability, It is quite valuable. We, At QUARTZO STONEX always try to implement best and advanced techniques to provide high quality quartz products in India. The scientific composition is silicon and oxygen atoms in a continuous framework of SiO4 siliconâ??oxygen tetrahedra, with every oxygen atom being co-valently shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz mineral basically differ from SIO2 in the sense that it contains Silica(SIO2) with certain other elements/impurities in a fixed composition.