Hello, Sir/Madam. We mine and export high-purity quartz stone, quartzite stone, quartzite silica sand, limestone, and dolomite stone. We can supply all of the materials listed above up to the following quantities. 1. Quartz stone: SiO2 99.86 (5000 tons per month)2. Quartzite stone: SIO2:SIO2:- 99.65 (5,000 tons per month)3. Quartzite silica sand has a sio2 value of 99.21 or higher, as required.4. Limestone5) Dolomite. (CaO:-29.04%) (CACO3:-51.84) (MGO:-18.80) We can export from all seven ports in India. We are actively seeking overseas buyers interested in long-term business. For payment arrangements and other inquiries, please contact the following email ID: