Eye Agate
A variety of Agate
Uncommon
What is Eye Agate?
Eye Agate is the umbrella term for any Agate stone that features one or several eye-like markings. Agate stones are known for their colorful bands. Sometimes, these bands are arranged circularly and extend into the stone, resembling eyes when observed from different angles. Eye Agate is often used with jewelry.
Optical Properties
- Refractive Index
- 1.530-1.543
- Birefringence
- 0.004
- Pleochroism
- None
- Optical Character
- Biaxial positive
- Dispersion
- 0.013
Discover Values
Rarity
3.9out of 5.0
78%
Popularity
4.0out of 5.0
80%
Beauty
4.3out of 5.0
86%
Cultural Value
3.9out of 5.0
78%
Collection Value
4.2out of 5.0
84%
Eye Agate Market Value Calculator
Estimate the market value of Eye Agate using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Eye Agate Localities Map
See where Eye Agate 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: Eye Agate 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 Eye Agate?
Quick Facts
Physical Properties
- Color
- Various colors
- Hardness (Mohs)
- 6.5 - 7
- Density
- 2.55 - 2.7 g/cm³
- Streak
- White
- Luster
- Waxy, Vitreous
- Crystal System
- Trigonal
Chemical Properties
- Chemical Formula
- SiO2
- Elements
- O, Si
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