Green Jasper
Quartz var. Green Jasper · Mineral Specimen
Crystal System
Trigonal, massive or microcrystalline habit
Mineral Group
Silicates
Chemical Formula
SiO2
Formation Process
Sedimentary or hydrothermal precipitation of silica-rich solutions
About This Crystal
An opaque, dark green, water-worn pebble or rock specimen with a matte to sub-vitreous luster and minor surface irregularities
Physical Characteristics
Dark green body color, white streak, conchoidal fracture, specific gravity around 2.65, brittle tenacity, no notable cleavage
Optical Properties
Singly refractive aggregate, microcrystalline, isotropic or pseudoisotropic under crossed polars due to fine-grained structure
Hardness & Durability
Origin Region
Found globally; notable deposits in India, Russia, Brazil, and the USA
Hardness & Durability
Mohs hardness of 6.5 to 7, high durability and toughness, excellent wearability for jewelry and carving
Care & Maintenance
Wash with warm soapy water, store separately from softer stones, resistant to most household chemicals and sunlight
Rarity & Value
Common mineral, low to moderate value depending on size, pattern, and polish quality, no common treatments needed
Special Characteristics
Microcrystalline structure often displaying intricate banding or webbed inclusions of iron or other mineral impurities
Lore & History
Historically used as an amulet for protection, grounding, and courage; associated with the heart chakra in traditional crystal healing