Blue Aventurine
Blue Quartzite
A variety of Quartzite
What is Blue Aventurine?
Blue Aventurine is the trade name for a natural stone that's often used in kitchens — including countertops, backsplashes, and other surfaces — as well as for tumbled stones. It makes a great substitute for marble and is said to be more durable. Blue Aventurine comes primarily from Brazil, though it can also be found in Russia and India.
Discover Values
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Blue Aventurine 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.
Blue Aventurine Localities Map
See where Blue Aventurine is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Composition of Blue Aventurine
Silicate mineral quartz
Health & Safety Information
- ⚠️Blue Aventurine in powdered form can be toxic due to its Crystalline Silica content.
- ⚠️Quartz, silica, crystalline silica and flint are non-toxic materials, but very fine dust containing quartz, known as respirable crystalline silicon (RCS), can cause serious and fatal lung disease. Lapidaries should exercise caution when cutting silica.
- ⚠️Blue Aventurine is typically non-toxic unless it's in powder form. Long-term exposure to finely ground powder may lead to silicosis. Therefore, when cutting or polishing blue Aventurine, be sure to wear a dust mask to avoid inhaling its dust.
Quick Facts
Physical Properties
- Color
- Blue
- Hardness (Mohs)
- 6.5 - 7
- Density
- 2.64 - 2.69 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- SiO2
- Elements
- Si, O
Also Known As
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Blue Aventurine FAQs
How do I identify Blue Aventurine?
Blue Aventurine can be identified by its hardness of 6.5 - 7 on the Mohs scale, Blue color. Look for these key characteristics when examining specimens.
What color is Blue Aventurine?
Blue Aventurine typically appears in Blue. Color can vary depending on impurities and formation conditions.
How hard is Blue Aventurine?
Blue Aventurine has a hardness of 6.5 - 7 on the Mohs scale. This gives it moderate hardness.
What is the composition of blue aventurine of Blue Aventurine?
Silicate mineral quartz