Smoky Quartz point from Brazil
Size-
6.7cm x 3.6cm x 2.5cm
Weight-
93g
You will receive the item in the photo
Smoky Quartz is a macrocrystalline variety of quartz. Its smoky brown to black colour is caused by the natural irradiation of trace aluminium impurities in the crystal lattice.
Smoky Quartz belongs to the silicate mineral class and is trigonal in the crystal system.
Smoky quartz growers in high temperature silica rich geological environments where fluids cool slowly enough to allow well formed crystals to develop. It is primarily found in:
Pegmatites: extremely coarse grained igneous rocks.
Hydrothermal veins and alpine clefts: cavities in igneous and metamorphic rocks like granite.
Radioactive rock margins: because its colour requires natural radiation, it’s heavily associated with areas containing radioactive mineral deposits.
Smoky Quartz hardness is 7 on the MOHs scale.