Blue Quartz
A variety of Quartz
What is Blue Quartz?
This variety of quartz, blue in coloring, can range from opaque to translucent. The color comes from inclusions of other minerals. Large pieces of quartzite that contain blue minerals will also sometimes be called blue Quartz. This quartz varietal can be found in Brazil and Spain.
Optical Properties
- Refractive Index
- 1.544-1.553
- Birefringence
- 0.009
- Pleochroism
- Weakly dichroic
- Optical Character
- Biaxial positive
- Dispersion
- 0.013
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Blue Quartz 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 Blue Quartz
Blue Quartz is a variety of Quartz. RockHoundR, the free-to-download rockhounding map from the Ruby Glint team, shows where collectors find quartz in the US, with land-access notes for BLM land and national forests. Collecting is banned in national parks.
See where to find quartzAlways check the local rules and get the landowner's permission before you collect.
Quick Facts
Physical Properties
- Color
- Blue
- Streak
- White
Chemical Properties
- Chemical Formula
- SiO2
- Elements
- O, Si
Also Known As
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Blue Quartz FAQs
How do I identify Blue Quartz?
Blue Quartz can be identified by its Blue color. Look for these key characteristics when examining specimens.
What color is Blue Quartz?
Blue Quartz typically appears in Blue. Color can vary depending on impurities and formation conditions.
