Supplier of Quartz powder grid sand lumps in India Taiwan Shri Vinayak Industries http://quartzpowdermanufacturers.com/supplier-of-quartz-powder-in-india.php The purity of quartz powder is between 99% and 99.9999%. The chemical name of quartz is silicon dioxide and the formula is SiO2. We manufacture all sizes of quartz as per the requirements of the customers. The entire range of quartz products are offered to the national and international markets and our products are also appreciated by the customers for their unique features.