sedimentary/metamorphic

Jasper with Epidote

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Sorosilicate [Ca2Al2Fe3+Si3O12(OH)]

Hardness: 6.5-7 (Mohs scale); Color: Brownish-red to dull green; Luster: Vitreous to dull/waxy; Crystal Structure: Microcrystalline (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.5-2.9

Hardness: 6
Color: Brownish-red to dull green
Luster: Vitreous to dull/waxy

Identified April 20, 2026More sedimentary/metamorphic →

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Physical properties

Formation & geological history

Formed through the deposition of silica-rich fluids in cavities or fractures within volcanic or sedimentary rocks, often undergoing mild metamorphism resulting in the green epidote veins.

Uses & applications

Used primarily as decorative stone, lapidary material for cabochons, and as a collector specimen due to its unique patterns.

Geological facts

Jasper is often referred to as the 'Supreme Nurturer.' Epidote is named from the Greek word 'epidosis' meaning 'addition,' referring to one side of the prism being longer than the other.

Field identification & locations

Identify in the field by its hardness (will scratch glass but steel will not scratch it) and its characteristic dull waxy luster. Commonly found in riverbeds or mountain ranges with high silica activity.

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