Jasper (Red)
Quartz var. Red Jasper · Decorative Stone and Mineral Specimen
Crystal System
Trigonal, microcrystalline (cryptocrystalline) aggregate forming massive or nodular habits
Mineral Group
Silicates
Chemical Formula
SiO2 (Silicon Dioxide with iron oxide inclusions)
Formation Process
Sedimentary or hydrothermal precipitation of silica-rich fluids rich in iron oxide impurities, often filling fissures or replacing organic matter
About This Crystal
An opaque, reddish-brown tumbled stone or pebble showing a waxy to dull luster, featuring an irregular, weathered surface texture and faint light-colored veining or fracture fillings
Physical Characteristics
Color ranges from brick red to brownish-red with white or grey veinlets; streak is white; cleavage is none due to microcrystalline structure; fracture is conchoidal to uneven; specific gravity is approximately 2.58 to 2.91; tenacity is brittle
Optical Properties
Refractive index ranges from 1.544 to 1.553; doubly refractive (aggregate); generally non-pleochroic and opaque, lacking significant optical phenomena except for potential polish luster
Hardness & Durability
Origin Region
Found globally with notable deposits in India, Russia, Brazil, Madagascar, and the USA; forms in sedimentary and volcanic environments
Hardness & Durability
Mohs hardness of 6.5 to 7; good toughness and durability making it suitable for various types of jewelry and decorative objects without special cleavage concerns
Care & Maintenance
Easy to care for; clean with warm soapy water and a soft brush; avoid harsh chemicals and store separately to prevent scratching softer stones; generally stable in light and heat
Rarity & Value
Common and widely accessible; value depends on size, polish, color uniformity, and interesting patterns; typically inexpensive and rarely subjected to synthetic enhancements other than tumbling or dyeing
Special Characteristics
Opaque microcrystalline structure with characteristic iron oxide inclusions imparting the deep red hue, often featuring web-like quartz or chalcedony veins
Lore & History
Historically used by ancient civilizations including the Egyptians, Greeks, and Native Americans for amulets, seals, and talismans; in modern crystal healing, it is traditionally associated with the root chakra, vitality, grounding, and endurance