Yellow Feather Jasper
A variety of Jasper
Uncommon
What is Yellow Feather Jasper?
A multicolored jasper most commonly mined in Utah, yellow Feather Jasper is a rare stone largely valued for its appearance. It is not widely recognized outside the craft jewelry industry, but it is highly valued there and among collectors. Technically a variety of silica, it owes its coloring to impurities within the mineral.
Optical Properties
- Refractive Index
- 1.54
- Birefringence
- 0.003-0.009
- Pleochroism
- None
- Optical Character
- Biaxial positive
- Dispersion
- 0.013
Yellow Feather Jasper Market Value Calculator
Estimate the market value of Yellow Feather Jasper using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Yellow Feather Jasper Localities Map
See where Yellow Feather 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: Yellow Feather 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 Yellow Feather Jasper?
Quick Facts
Physical Properties
- Color
- Yellow, tan, orange with dark brown or black feather-like dendrites
- Hardness (Mohs)
- 6.5 - 7
- Density
- 2.58 - 2.91 g/cm³
- Streak
- White, Yellow, Brown, Red
- Luster
- Vitreous, Dull
- Crystal System
- Trigonal
Chemical Properties
- Chemical Formula
- SiO2
- Elements
- Si, O
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