A grey, translucent brown to nearly black variety of quartz, its color resulting from natural irradiation. It's a superb grounding and anchoring stone, effective in neutralizing negativity, detoxifying, and relieving stress.
Brown, Grey, Black, Smoky Yellow-Brown, Transparent to Translucent
Smoky Quartz is classified as a tectosilicates, quartz variety mineral which typically crystallizes in the α-quartz: trigonal trapezohedral class 3 2; β-quartz: hexagonal 622[1] system. Its chemical formula is SiO2. Common crystal habits include 6-sided prism ending in 6-sided pyramid (typical), drusy, fine-grained to microcrystalline, massive.