Smoky Quartz Value, Price, and Jewelry Information

Smokey Quartz
Smokey Quartz

Smoky Quartz Value

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Quartz Value via Gem Price Guide
Smoky Quartz All sizes
Faceted to /ct
Rose Quartz All sizes
Faceted to /ct
Rutilated & Tourmalinated Quartz All sizes
Faceted to /ct
Cabochons /ct
Quartz with Lepidocrite All sizes
Faceted or cabochon to /ct
Star Quartz All sizes
to /ct

See the entire Gem Price Guide.

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Smoky Quartz Information

NameSmoky Quartz
Is a Variety ofQuartz
Crystallography Hexagonal.
Refractive Index 1.544-1.553
Colors Every shade of brown.
Luster Vitreous.
Polish Luster Vitreous.
Fracture Luster Vitreous.
Fracture Conchoidal to uneven
Hardness 7
Specific Gravity 2.651
Birefringence 0.009
Cleavage None or indistinct
Dispersion 0.013
Wearability Very Good
Enhancements Heating (occasional).
Transparency Transparent to opaque.
Absorption Spectrum Not diagnostic.
Pleochroism Dark stones: weak brown/reddish brown. Light stones: weak, light and darker yellowish brown.
Optics = 1.544; = 1.553 (very constant). Uniaxial (+).


Smoky quartz is also mistaken for topaz. It comes in every shade of brown, from a light tan to nearly black. “Chocolate citrine” is a pleasant brownish/yellow color. Smoky quartz is known for its large sizes. The person who wants a really big gem, without a really big budget, often ends up with one of these.


  • Cairngorm Mountains, Scotland.
  • Minas Gerais, Brazil; Madagascar; Switzerland.
  • United States: California; North Carolina.

Stone Sizes

Smoky quartz: is in the same size league as citrine, but larger stones get very dark and opaque. Smithsonian Institution (Washington, D.C): 4500 (California) and 1695 (Brazil), plus others.