Gayite
A variety of Minerals
What is Gayite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Gayite 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
- greenish black
- Hardness (Mohs)
- 4 - 5
- Rock tumbling
- Not recommended
- Density
- 3.245 g/cm³
- Streak
- olive green
Chemical Properties
- Chemical Formula
- NaMn2+Fe3+5(PO4)4(OH)6 · 2H2O
- Elements
- Fe, H, Mn, Na, O, P
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Gayite FAQs
How do I identify Gayite?
Gayite can be identified by its hardness of 4 - 5 on the Mohs scale, greenish black color. Look for these key characteristics when examining specimens.
What color is Gayite?
Gayite typically appears in greenish black. Color can vary depending on impurities and formation conditions.
How hard is Gayite?
Gayite has a hardness of 4 - 5 on the Mohs scale. This gives it moderate hardness.
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