Shungite
Shungite (Non-crystalline carbon variety) · Mineral Specimen / Decorative Stone
Crystal System
Amorphous (Non-crystalline); lacks a defined crystal habit, typically occurring in massive or stony forms.
Mineral Group
Native Element (Carbon-based mineraloid)
Chemical Formula
C (Elemental Carbon, typically 30-98%, with trace SiO2, Al2O3)
Formation Process
Sedimentary metamorphic; resulting from the metamorphosis of Precambrian oil shales and organic matter (algae) approximately 2 billion years ago.
About This Crystal
An opaque, black, coal-like mineral with a sub-metallic to vitreous luster. High-grade specimens (Elite Shungite) exhibit a silvery-black mirror-like finish, while lower grades are matte black.
Physical Characteristics
Color: Black to silvery gray; Streak: Black; Cleavage: None; Fracture: Conchoidal to uneven; Specific Gravity: 1.8 - 2.0; Tenacity: Brittle; Highly electrically conductive.
Optical Properties
Opaque; lacks refractive index/birefringence due to its amorphous, non-crystalline nature; sub-metallic reflection.
Hardness & Durability
Origin Region
Karelia, Russia (notably the Zazhoginsky mine); formed in ancient sedimentary basins.
Hardness & Durability
Mohs Hardness: 3.5 - 4.0; brittle and prone to scratching; relatively low toughness compared to gemstones.
Care & Maintenance
Clean with slightly damp soft cloth; avoid harsh chemicals and ultrasonic cleaners; soft enough to be scratched by quartz or steel.
Rarity & Value
Common in industrial grades; 'Elite' or 'Noble' Shungite is rare; value depends on carbon content and luster.
Special Characteristics
Contains fullerenes (unique spherical carbon molecules); exceptional electrical conductivity for a non-metallic mineral.
Lore & History
Known historically in Russia as a 'life-giving stone'; Peter the Great famously used it for water purification. Traditionally associated with grounding and protection from EMFs.