Green Jasper
A variety of Jasper
Uncommon
What is Green Jasper?
Used since the earliest days of human civilization, green Jasper has been an important stone for ornaments and jewelry. Suitable for fine polishing, this attractive Jasper variety has been used for carved ornaments, beads, ring inlays, and cabochons. One of the most famous green Jasper varieties is the one with small red dots known as Bloodstone or Heliotrope.
Optical Properties
- Refractive Index
- 1.54
- Birefringence
- 0.003-0.009
- Pleochroism
- None
- Optical Character
- Biaxial positive
- Dispersion
- 0.013
Discover Values
Rarity
3.8out of 5.0
76%
Popularity
4.0out of 5.0
80%
Beauty
4.1out of 5.0
82%
Cultural Value
3.6out of 5.0
72%
Collection Value
4.1out of 5.0
82%
Green Jasper Market Value Calculator
Estimate the market value of Green Jasper using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Green Jasper Localities Map
See where Green Jasper is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Map preview
North ZoneCentral RidgeSouth Basin
Health & Safety Information
- ⚠️Harm Reason: Green 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 Green Jasper?
Quick Facts
Physical Properties
- Color
- Green
- Hardness (Mohs)
- 6.5 - 7
- Density
- 2.58 - 2.91 g/cm³
- Streak
- White
- Luster
- Vitreous
- Crystal System
- Trigonal
Chemical Properties
- Chemical Formula
- SiO2
- Elements
- Si, O
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