... produce transparent quartz blocks and jealous quartz blocks or opaque block. Our products include high pure and general pure quartz blocks ... . Our main catagory fall into round blocks and square blocks.Alien blocks is our strong point. We can make ... .9999% OTHER QUARTZ CATEGORY: Grain, Wafer, Disc, Panel, Plate, Ring, Block, Sand, Rod CHARACTERISTICS: High Pure; Low Air Bubble Density; Low ...