Shungite
Shungite (non-crystalline carbon) · Mineral Specimen / Decorative Stone / Wellness Stone
Crystal System
Amorphous (Non-crystalline). Often occurs in massive or stony habits with a matte to sub-metallic finish.
Mineral Group
Native Elements (Carbon-rich mineraloid)
Chemical Formula
C (elemental Carbon, typically 30-98%) with minor SiO2 and Al2O3
Formation Process
Metamorphic. Formed from the metamorphosis of ancient organic sediments (algae and bacteria) under high pressure and temperature over 2 billion years.
About This Crystal
An opaque, black, coal-like mineraloid. Type II (Elite) is silvery and lustrous, while the common Type III shown is matte black, stony, and dense with a sub-metallic to dull luster.
Physical Characteristics
Color: Black to charcoal gray; Streak: Black; Cleavage: None; Fracture: Conchoidal to uneven; Specific Gravity: 1.8 - 2.0; Non-magnetic; Highly electrically conductive.
Optical Properties
Opaque (does not transmit light). Refractive index is not applicable. Shows a dull to sub-metallic reflectance.
Hardness & Durability
Origin Region
Karelia, Russia (Zazhoginsky mine). Typically found in Precambrian metamorphic rocks.
Hardness & Durability
Mohs Hardness: 3.5 - 4.0. Relatively soft and brittle; can be easily scratched by a steel knife or copper penny.
Care & Maintenance
Avoid prolonged immersion in water (can rust if high in iron impurities). Clean with a dry cloth. Keep away from harder stones to prevent scratching.
Rarity & Value
Common (Type III) to Rare (Elite Type I). Relatively inexpensive for massive specimens. Value is based on carbon content and purity.
Special Characteristics
High electrical conductivity (often used to verify authenticity). Contains unique carbon molecules known as fullerenes (buckyballs).
Lore & History
Historically used in Russia since Peter the Great for water purification. Popular in modern lore as a shielding stone against electromagnetic frequencies (EMF) and for grounding.