Quartz Crystal, Color : White, Form : Lumps

Quartz is the most common mineral which alone forms by SiO2 in the nature, which including two kinds of quartz, one is trigonal crystal low temperature quartz (a quartz) and hexad crystal high temperature quartz (b quartz). Its assumes the shapes of rhombohedron, hexad direction columniation, double tripartite cone, the tripartite rhombic shape; which color is achromaticity, ivory-white, multi colors if mixed in the impurity not cleaves of mixed in the impurity, Not cleaves, has the conchoidal fracture, the oily luster, hardness 7, density 2.65 g/cm3. Its crystal common has solid, liquid and gas enwrap.