Smoky Quartz tumbled
A variety of Smoky Quartz
What is Smoky Quartz tumbled?
Tumbled smoky Quartz tumbled is produced from the abundant material found in many localities around the world. It is prized as an affordable and inexpensive gem whose color varies from light brown to almost black. It is commonly faceted or cut into beads and cabochons, and regularly used with jewelry, particularly necklaces, rings, and pendants. Darker varieties are a popular choice for men's jewelry.
Optical Properties
- Refractive Index
- 1.544-1.553
- Birefringence
- 0.009
- Pleochroism
- Weak: green-brown, reddish-brown
- Optical Character
- Biaxial positive
- Dispersion
- 0.013
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Smoky Quartz tumbled before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Where to Find Smoky Quartz tumbled
Smoky Quartz tumbled is a variety of Smoky Quartz. RockHoundR, the free-to-download rockhounding map from the Ruby Glint team, shows where collectors find smoky quartz in the US, with land-access notes for BLM land and national forests. Collecting is banned in national parks.
See where to find smoky quartzAlways check the local rules and get the landowner's permission before you collect.
Quick Facts
Physical Properties
- Streak
- White
Chemical Properties
- Chemical Formula
- SiO2
- Elements
- O, Si
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