How do I identify Bull's Eye?

Bull's Eye can be identified by its hardness of 6.5 - 7 on the Mohs scale, Red color, Silky, Vitreous luster, Trigonal crystal system. Look for these key characteristics when examining specimens.

What color is Bull's Eye?

Bull's Eye typically appears in Red, brown. Color can vary depending on impurities and formation conditions.

How hard is Bull's Eye?

Bull's Eye has a hardness of 6.5 - 7 on the Mohs scale. This gives it moderate hardness.

Bull's Eye

A variety of Tiger's Eye

Uncommon

What is Bull's Eye?

Bull's Eye is used for jewelry material. As a member of the Quartzite group, these stones offer beautiful red and brown colorations. This coloring can be enhanced with artificial dyes.

Optical Properties

Refractive Index: 1.534-1.540
Birefringence: 0.009
Pleochroism: None
Optical Character: Biaxial positive
Dispersion: 0.013

Discover Values

Rarity

3.8out of 5.0

76%

Popularity

4.1out of 5.0

82%

Beauty

4.4out of 5.0

88%

Cultural Value

3.9out of 5.0

78%

Collection Value

4.3out of 5.0

86%

Bull's Eye Market Value Calculator

Estimate the market value of Bull's Eye using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Bull's Eye Localities Map

See where Bull's Eye 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: Bull's Eye in powdered form can be toxic due to its Crocidolite Asbestos, Crystalline Silica content.
⚠️Physical Toxicity: Beware of asbestos. Inhalation of asbestos fibres can lead to various dangerous lung conditions, including mesothelioma, asbestosis, and lung cancer. And it can take years for symptoms related to the exposure to appear. Lapidaries should exercise caution when cutting this mineral.
⚠️How to prevent the risks of Bull's Eye?