Red Jasper
Quartz var. Jasper · Decorative Stone and Semi-Precious Mineral
Crystal System
Trigonal, microcrystalline (cryptocrystalline)
Mineral Group
Silicates (Tectosilicates)
Chemical Formula
SiO2
Formation Process
Sedimentary or hydrothermal deposition, often forming from silica-rich fluids replacing other minerals or via precipitation in marine environments
About This Crystal
An opaque, polished smooth specimen featuring a deep brick-red and dark reddish-brown body color with subtle banding and dark inclusions, exhibiting a vitreous to waxy luster due to tumbling.
Physical Characteristics
Brick-red to dark brown color, white streak, no cleavage, conchoidal fracture, specific gravity around 2.65, brittle tenacity, completely opaque
Optical Properties
Singly refractive aggregate under conoscope, isotropic to aggregate polarization, lacks pleochroism due to microcrystalline structure
Hardness & Durability
Origin Region
Worldwide, with notable deposits in India, Brazil, Russia, Madagascar, Australia, and the United States
Hardness & Durability
Mohs hardness of 6.5 to 7, high toughness and durability, highly stable and well-suited for all types of jewelry wear
Care & Maintenance
Easily cleaned with warm soapy water and a soft cloth, avoid harsh chemical acids, highly stable in sunlight
Rarity & Value
Common and widely accessible, affordable price range typically varying by size and polish quality, rarely treated except for occasional dyeing
Special Characteristics
Microcrystalline quartz structure often containing iron oxide impurities that create rich opaque red and brown patterns
Lore & History
Historically used by ancient civilizations including the Egyptians and Native Americans as an amulet of protection and grounding, traditionally associated with the root chakra