Stromatolite or Sodalite Granite (often sold as K2 Jasper/Granite)
Microcline and Quartz with Azurite/Malachite inclusions or complex Feldspar-Quartz aggregate · Decorative Stone and Mineral Specimen
Crystal System
Triclinic and Trigonal / Massive aggregate
Mineral Group
Silicates
Chemical Formula
KAlSi3O8 + SiO2
Formation Process
Magmatic crystallization and hydrothermal alteration
About This Crystal
A polished spherical specimen displaying a stark, high-contrast matrix of deep black and dark grey intergrown with bright white and pale greenish-grey mineral veins and patches, showing a vitreous to greasy polished luster.
Physical Characteristics
Colors include black, dark grey, and bright white; streak is white; uneven fracture; specific gravity ranges from 2.5 to 2.7; brittle tenacity.
Optical Properties
Singly and doubly refractive aggregate with no significant pleochroism or special optical phenomena in this form.
Hardness & Durability
Origin Region
Pakistan, specifically the foothills of the K2 mountain, or worldwide granitic intrusions
Hardness & Durability
Mohs hardness of 6 to 7; moderate toughness; susceptible to hydrofluoric acid; good for decorative items.
Care & Maintenance
Clean with warm soapy water and a soft cloth; avoid harsh chemicals, ultrasonic cleaners, and prolonged direct sunlight.
Rarity & Value
Uncommon to Rare depending on the specific locality; value depends on the aesthetic contrast of the matrix, polished size, and symmetry.
Special Characteristics
Distinctive high-contrast patchwork pattern resembling snowy granite veined with stark white and dark inclusions.
Lore & History
Popularly used in modern crystal healing to connect with higher consciousness, balance intuition with grounded logic, and stimulate the third eye chakra, though these remain traditional beliefs.