Preferred Buyer From :
All over the world
We offer quartz lumps. Quartz lumps found naturally in mines and should be resized in crusor as per the requirement. Dressed quartz are pure white lumps. The size for quartz pebbles is from 50 mm to 500 mm. Special grade : sio2 99.95% 1st grade : sio2 99.8%, fe2o3 : 0.004%max 2nd grade : sio2 99.7%, fe2o3 : 0.008% min. 3rd grade : sio2 99.5%, fe2o3 : 0.03% min.