Convoluted Jasper
A variety of Jasper
Uncommon
What is Convoluted Jasper?
Convoluted Jasper is a commercial, trading name for a finely polished stone with reddish and brownish bands. The material is usually sold tumbled or carved into hearts.
Optical Properties
- Refractive Index
- 1.54
- Birefringence
- 0.003-0.009
- Pleochroism
- None
- Optical Character
- Biaxial positive
- Dispersion
- 0.013
Convoluted Jasper Market Value Calculator
Estimate the market value of Convoluted Jasper using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Convoluted Jasper Localities Map
See where Convoluted Jasper is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Map preview
North ZoneCentral RidgeSouth Basin
Key Characteristics
Composition of Convoluted Jasper
Silicon Dioxide with inclusions of Iron Oxide
Health & Safety Information
- ⚠️Harm Reason: Convoluted Jasper in powdered form can be toxic due to its Crystalline Silica content.
- ⚠️Physical Toxicity: 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.
- ⚠️How to prevent the risks of Convoluted Jasper?
Quick Facts
Physical Properties
- Color
- Red with white, cream, brown bands
- Hardness (Mohs)
- 6.5 - 7
- Density
- 2.5 - 2.6 g/cm³
- Streak
- Black
- Luster
- Vitreous
- Crystal System
- Trigonal
Chemical Properties
- Chemical Formula
- SiO2
- Elements
- Si, O
FREE APP
4.7
Identify Convoluted Jasper Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you