Quartz
Quartz Both Amorphous and Crytalline.
High purity quartz lump with sio2 99.8%+ for crucibles, borax pentahydrate, mica quartz
Green Aventurine (Green Quartz) Rough
Quartz
Quartz lumps
Quartz
Quartz grits
Granular quartz lumps
Crystal quartz lumps
Quartz lump
Quartz for project
Quartz lumps of good quality