Cumengeite
A variety of Minerals
What is Cumengeite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Cumengeite 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.
Quick Facts
Physical Properties
- Color
- Indigo blue
- Hardness (Mohs)
- 2.5
- Rock tumbling
- Not recommended
- Density
- 4.66 g/cm³
- Streak
- Sky-blue
Chemical Properties
- Chemical Formula
- Pb21Cu20Cl42(OH)40 · 6H2O
- Elements
- Cl, Cu, H, O, Pb
Also Known As
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Cumengeite FAQs
How do I identify Cumengeite?
Cumengeite can be identified by its hardness of 2.5 on the Mohs scale, Indigo blue color. Look for these key characteristics when examining specimens.
What color is Cumengeite?
Cumengeite typically appears in Indigo blue. Color can vary depending on impurities and formation conditions.
How hard is Cumengeite?
Cumengeite has a hardness of 2.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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