Shungite
Shungite (non-crystalline carbon) · Collector Mineral / Decorative Stone
Crystal System
Amorphous; typically occurs in massive, matte, or lustrous conchoidal habits
Mineral Group
Mineraloids (Elementary carbon)
Chemical Formula
C (Carbon, typically 30-98% transition to graphite) with trace SiO2, Al2O3
Formation Process
Metamorphic; derived from ancient organic sediments (algae/plankton) altered by high pressure and heat over 2 billion years
About This Crystal
Deep black, opaque specimen with a sub-metallic to vitreous luster. This specific sample appears to be 'Noble' or 'Elite' Shungite due to its high luster, glassy texture, and conchoidal fracturing.
Physical Characteristics
Color: Black; Streak: Black; Cleavage: None; Fracture: Conchoidal; Specific Gravity: 1.8-2.0; Non-magnetic; Highly electrically conductive.
Optical Properties
Opaque; Non-refractive; Luster is often described as metallic-adamantine in elite specimens; No pleochroism or dispersion.
Hardness & Durability
Origin Region
Karelia, Russia (Zazhoginskoye deposit near Lake Onega)
Hardness & Durability
Mohs hardness: 3.5 to 4.0; Brittle tenacity; Low durability for jewelry, prone to scratching and fracturing upon impact.
Care & Maintenance
Clean with warm soapy water only; avoid ultrasonic cleaners or harsh chemicals; store separately to prevent scratching from harder minerals.
Rarity & Value
Elite Shungite (Type I) is rare (comprising <1% of deposits); valued by weight and luster; often sold as a raw specimen or polished into spheres/pyramids.
Special Characteristics
High electrical conductivity (rare for non-metals); contains trace amounts of fullerenes (spherical carbon molecules); highly lustrous reflective surfaces.
Lore & History
Historically used in Russia as a water purification agent since the time of Peter the Great. In metaphysical lore, it is believed to be a 'stone of protection' and grounder of electromagnetic frequencies (EMF).