Gillulyite
A variety of Minerals
What is Gillulyite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Gillulyite 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
- Deep red
- Hardness (Mohs)
- 2 - 2.5
- Rock tumbling
- Not recommended
- Density
- 4.14 g/cm³
- Streak
- Brick red
Chemical Properties
- Chemical Formula
- Tl2As7.5Sb0.3S13
- Elements
- As, S, Sb, Tl
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Gillulyite FAQs
How do I identify Gillulyite?
Gillulyite can be identified by its hardness of 2 - 2.5 on the Mohs scale, Deep red color. Look for these key characteristics when examining specimens.
What color is Gillulyite?
Gillulyite typically appears in Deep red. Color can vary depending on impurities and formation conditions.
How hard is Gillulyite?
Gillulyite has a hardness of 2 - 2.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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