Silica quartz lumps.
Milky quartz lumps and acid salica lining for iron furnaces.
Quartz lumps.
Gemstones like rose quartz, rutile quartz amathest, acquamarine, emarald.
High purity quartz powder, quartz grits , lumps.
Quartz SIO2 of 98% with 91%percent TST.
Quartz.