Red Jasper
Quartz var. Jasper · Decorative Stone and Semi-Precious Gemstone
Crystal System
Trigonal, microcrystalline aggregate habit
Mineral Group
Silicates (Tectosilicate subgroup)
Chemical Formula
SiO2
Formation Process
Sedimentary and hydrothermal processes where silica-rich fluids precipitate in rock cavities, often incorporating iron oxides during deposition
About This Crystal
An opaque, tumbled polished stone exhibiting a deep reddish-brown to brick-red color with subtle darker linear inclusions and hairline fractures filled with secondary minerals
Physical Characteristics
Brick-red body color, white streak, conchoidal fracture, lack of distinct cleavage, specific gravity of approximately 2.65, brittle tenacity, and completely opaque
Optical Properties
Singly refractive as a microcrystalline aggregate, vitreous to dull luster when polished, non-pleochroic
Hardness & Durability
Origin Region
India, Brazil, Madagascar, USA, and South Africa; forms in sedimentary and volcanic environments
Hardness & Durability
Mohs hardness of 6.5 to 7, high toughness due to microcrystalline interlocking structure, very durable for everyday jewelry wear
Care & Maintenance
Clean with warm soapy water and a soft cloth, avoid harsh chemical solvents, store separately from softer gemstones to prevent scratching
Rarity & Value
Common, highly accessible, affordable price range, widely used for carvings, tumbling, and cabochons without needing enhancement treatments
Special Characteristics
Contains finely dispersed iron oxide inclusions that give it the characteristic opaque red color, sometimes exhibits webbed patterns
Lore & History
Historically used by ancient civilizations including the Egyptians and Native Americans as an amulet for protection and strength; traditionally associated with the root chakra for grounding and vitality