Benjaminite
A variety of Minerals
What is Benjaminite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Benjaminite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Benjaminite Localities Map
See where Benjaminite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Grey; tarnishes dull or yellow to copper-red
- Hardness (Mohs)
- 3.5
- Density
- 6.68 g/cm³
- Streak
- Dull lead-gray
Chemical Properties
- Chemical Formula
- Ag3Bi7S12 Ag may be replaced by minor Cu and Bi by minor Pb.
- Elements
- Ag, Bi, S
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Benjaminite FAQs
How do I identify Benjaminite?
Benjaminite can be identified by its hardness of 3.5 on the Mohs scale, Grey; tarnishes dull or yellow to copper-red color. Look for these key characteristics when examining specimens.
What color is Benjaminite?
Benjaminite typically appears in Grey; tarnishes dull or yellow to copper-red. Color can vary depending on impurities and formation conditions.
How hard is Benjaminite?
Benjaminite has a hardness of 3.5 on the Mohs scale. This gives it moderate hardness.
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