Quartz is one of the most widespread minerals in the earth's crust and is a significant component of many types of igneous, metamorphic and sedimentary rocks. When pure, quartz forms colorless, transparent and very hard crystals, with a luster similar to that of glass. The oldest name, reported in Greek by Theophrastus in the fourth century. to. C, is “krýstallos”, which means ice. For Pliny, a Latin author of the first century. d. C, the “crystallus” is “ice frozen beyond all limits”. This natural form of silicon dioxide is found in an impressive range of varieties and colors. The blue color is given by the presence of crocidolite or tourmaline inclusions in the crystal lattice.
Dimensions
Height (cm): 7.4
Depth (cm): 7.4
Width (cm): 7.4
Weight (g): 561
Property
Chemical Formula: SiO2 + Na, Al, Fe, Ti + (Ca, Mg, Mn)
Mohs scale: 7
Relative density: 2.65
Crystalline System: Trigonal
