Jasper
Quartz var. Jasper · Decorative Stone
Crystal System
Trigonal, massive or microcrystalline habit
Mineral Group
Silicates
Chemical Formula
SiO2
Formation Process
Sedimentary or hydrothermal precipitation of microcrystalline quartz-rich solutions
About This Crystal
An opaque, multicolored specimen showing brownish and earthy tones with distinct banding and fractures typical of common jasper or chert
Physical Characteristics
Brownish-red to tan body color, white streak, conchoidal fracture, no cleavage, specific gravity around 2.65
Optical Properties
Singly refractive aggregate with no significant pleochroism or dispersion
Hardness & Durability
Origin Region
Worldwide, commonly found in river beds, alluvial deposits, and volcanic regions
Hardness & Durability
Mohs hardness of 6.5 to 7, high durability and excellent wearability for jewelry use
Care & Maintenance
Wash with warm soapy water, store separately to avoid scratching softer materials, highly stable against heat and light
Rarity & Value
Very common, inexpensive, and widely available worldwide without the need for enhancement treatments
Special Characteristics
Microcrystalline structure, natural banding, opaque appearance with earthy mineral impurities
Lore & History
Historically used by ancient civilizations for amulets, tools, and seals; traditionally associated with grounding, stability, and endurance in metaphysical practices