Greenstone
A variety of Metamorphic
What is Greenstone?
Greenstone is a field term used to describe any dense, dark-green altered or metamorphosed basic igneous rock. The distinctive green color of greenstone is typically caused by the presence of epidote, actinolite, or chlorite.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Greenstone 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.
Greenstone Localities Map
See where Greenstone is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Composition of Greenstone
Chlorite Group, Actinolite, Epidote
Quick Facts
Physical Properties
- Color
- Green
- Density
- 2.8 - 3.2 g/cm³
Also Known As
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Greenstone FAQs
How do I identify Greenstone?
Greenstone can be identified by its Green color. Look for these key characteristics when examining specimens.
What color is Greenstone?
Greenstone typically appears in Green. Color can vary depending on impurities and formation conditions.
What is the composition of greenstone of Greenstone?
Chlorite Group, Actinolite, Epidote
