Smoky Quartz is a captivating variety of quartz, prized for its characteristic smoky color, which ranges from a subtle gray to a rich dark brown or nearly black. This unique coloration is the result of natural irradiation of silicon dioxide crystals within the Earth's crust, altering their crystal structure.
Smoky Quartz crystals often exhibit excellent transparency and a vitreous luster, sometimes forming impressive druses or well-formed hexagonal prisms. Significant deposits of this mineral are found in Brazil, the Swiss Alps, Madagascar, Scotland (where it is historically known as 'Cairngorm'), the USA (especially Colorado), and other regions worldwide. It is typically found in granitic pegmatites and hydrothermal veins.
This mineral is highly valued by collectors for its aesthetic appeal and unique coloring. While often attributed with grounding and protective properties, its primary value lies in its natural beauty and geological origin. It is believed to promote the dissipation of negativity and clarity of thought.
Smoky Quartz is a beautiful addition to any mineralogical collection and an excellent choice for those who appreciate the natural beauty, durability, and uniqueness of minerals.
Physical properties
Chemical formula
SiO₂ (Silicon Dioxide)
Hardness
7 on the Mohs scale
Crystal system
Trigonal
Transparency
Transparent to translucent, sometimes opaque
Luster
Vitreous
Color
From light gray and brown to dark brown, black
Specific gravity
2.60 - 2.65
Jewelry with this mineral
If you notice errors or inaccuracies in mineral descriptions, please contact us.