... edge 90% granule pass the mesh test Crushed black quartz, is the perfect material for the marble and ... glass, the quality is very good. The black quartz granule is almost in round shape, it's not ... . And it's very clean. Our crushed black quartz have been exported to all over the world, specially ... Tons/Bag, 20 Bags/20'GPApart from crushed black quartz, we produces many other crushed items, such as ...