Shungite
Shungite (Non-crystalline carbon variety) · Mineral Specimen / Decorative Stone
Crystal System
Amorphous (Non-crystalline) / Massive habit
Mineral Group
Native Element (Carbon group), Organic-rich rock
Chemical Formula
C (Elemental Carbon with trace Fullerenes C60, C70)
Formation Process
Metamorphism of ancient Precambrian organic sediments (biogenic origins approximately 2 billion years old)
About This Crystal
Opaque, matte to sub-metallic black or dark gray mineraloid with a charcoal-like appearance; may show conchoidal fracture and silvery metallic flecks.
Physical Characteristics
Color: Black/Dark Gray; Streak: Black; Luster: Sub-metallic to dull; Fracture: Conchoidal to uneven; Specific Gravity: 1.8 - 2.0; Non-fluorescent.
Optical Properties
Opaque; lacks refractive index or birefringence due to its amorphous carbon structure; non-pleochroic.
Hardness & Durability
Origin Region
Karelia, Russia (Zazhoginsky Mine near Lake Onega)
Hardness & Durability
Mohs Hardness: 3.5 - 4.0; Brittle tenacity; stable under normal conditions but easily scratched by harder materials.
Care & Maintenance
Clean with soft damp cloth; avoid harsh chemicals or ultrasound; soft material should be stored away from quartz or gems to prevent scratching.
Rarity & Value
Relatively common but geographically localized; Elite (Type I) Shungite is rarer and more expensive than standard (Type II/III) carving-grade material.
Special Characteristics
Notable for containing natural Fullerenes (spherical carbon molecules); high electrical conductivity for a non-metal.
Lore & History
Used since the time of Peter the Great (18th Century) for water purification in Russia; traditionally used today for EMF protection and grounding.