Guide
Smoky quartz specimens for sale
337 for sale · $6–$155,000 USD
942 in the gallery
Smoky quartz is a variety of quartz that gains its distinctive color from natural irradiation and aluminium impurities, producing a brown to gray to black hue. Crystals typically form in well-faced prismatic habits with glassy to vitreous luster, and often occur as clusters, druses, or terminated crystals that catch light along their faces. The mineral can be found in a range of pegmatites and hydrothermal veins, with notable specimens reported from several classic mineral localities around the world.
- Formula
- SiO2
- Rarity
- Common
- Stability
- Stable
- Collector interest
- Moderate Interest
- Classification notes
- Silicate; framework silicate (tectosilicate); Strunz 9.FA
Key characteristics
- Crystal system
- trigonal
- Mohs hardness
- 7
- Specific gravity
- 2.65–2.66
- Luster
- vitreous
- Transparency
- transparent, translucent
- Color
- brown, gray, black
- Streak
- white
- Cleavage
- none
- Fracture
- conchoidal
- Crystal habit
- prismatic, pyramidal, druzy, granular, massive
- Gem mineral
- Classic / historic
Buy Smoky quartz specimens
View all 337Where Smoky quartz is found
Top localities
- Wushan Spessartine Mine104 specimens
- Brandberg Area32 specimens
- Goboboseb Mountains25 specimens
- Afghanistan23 specimens
- Minas Gerais23 specimens
- Paprok21 specimens
- Papachacra20 specimens
- Erongo Mountains17 specimens
- Smoky Hawk claim15 specimens
- Switzerland12 specimens
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Guide
Smoky Quartz from Hallelujah Junction, USA
Smoky Quartz - Hallelujah Junction, USA: dramatic scepter crystals, sharp terminations, internal zoning, multi-stage growth from Petersen Mountain.Read guide
Guide
Smoky Quartz from Goboboseb Mountains, Namibia
Goboboseb Mountains, Namibia — smoky quartz with glassy luster, zoning, amethyst phantoms, and floater crystals from basalt cavities; prized by collectors.Read guide
Guide
Smoky Quartz from Crystal Peak, Colorado, USA
Crystal Peak smoky quartz – dark, sharply terminated crystals with satin luster, often paired with amazonite; a Colorado classic from the Pikes Peak batholith.Read guideAbout Smoky quartz
Collectors prize smoky quartz for its clear to dark tones, the depth of color that can intensify in larger crystals, and the way color tends to be evenly distributed through the crystal lattice. Localities such as the United States, Namibia, China, Switzerland, and Brazil have produced widely collected examples, from compact single crystals to substantial, gem-like pieces. The combination of color, transparency, and crystal form makes smoky quartz a versatile and appealing addition to mineral cabinets and display shelves.
