Product Variations - Lumps, Ingots, Grits (Different sizes available from 10mm-1000mm); Desired size can be processed and given. Two grades of Milky Quartz is available (Grade-A, and Grade-B) Product Description - Glassy quartz is the highest purity form of quartz. The colour is transparent.We have two grades of glassy quartz available. Product Price - $100-$450 Product Origin - Tamil Nadu, India Special Features - Our glassy quartz has extremely high purity of SiO2. It is free from almost all major impurities. It is one of our premium products and has an impressive electrical conductivity parameters. Minimum Order Quantity - 1 twenty foot container