Red Jasper
Quartz var. Jasper (Microcrystalline Quartz) · Semi-Precious Gemstone / Decorative Stone
Crystal System
Trigonal (Hexagonal system); usually occurs in massive, microcrystalline aggregates without visible crystal faces.
Mineral Group
Silicates (Tectosilicate subgroup); member of the Quartz group.
Chemical Formula
SiO2 (Silicon Dioxide) with impurities of Hematite (Fe2O3) providing the red color.
Formation Process
Primarily sedimentary or hydrothermal. Formed when silica-rich fluids permeate through volcanic or sedimentary rock, with fine-grained iron inclusions becoming trapped during the silicification process.
About This Crystal
An opaque, microcrystalline variety of quartz. It features a deep reddish-brown to bright red color due to high iron content, displaying a dull to vitreous luster when polished. This specific specimen is carved into a 'mushroom' shape and shows characteristic brecciated or mottled patterns with dark mineral inclusions.
Physical Characteristics
Color: Brick-red to mahogany; Streak: White or reddish; Cleavage: None; Fracture: Conchoidal to splintery; Specific Gravity: 2.58–2.91; Tenacity: Brittle; Fluorescence: Generally none.
Optical Properties
Refractive Index: 1.544–1.553; Birefringence: None (aggregate effect); Pleochroism: None; Optical character: Opaque; Phenomenon: None.
Hardness & Durability
Origin Region
Found worldwide; major sources include India, Brazil, South Africa, Madagascar, Australia, and the United States (western states).
Hardness & Durability
Mohs Hardness: 6.5 to 7. Excellent durability and toughness for jewelry and carvings due to its dense, microcrystalline structure. No cleavage concerns.
Care & Maintenance
Safe to clean with warm soapy water and a soft brush. While stable, it should be stored separately from harder stones like Sapphire or Diamond to prevent scratching. Avoid prolonged exposure to harsh chemicals.
Rarity & Value
Common. It is an affordable and widely available gemstone. Value is determined by color intensity, pattern uniqueness, and the quality of the lapidary work (carving/polish). Highly saturated reds are preferred.
Special Characteristics
Opaque transparency distinguishes it from other quartz varieties. It may contain 'phantom' patterns or dendritic inclusions of manganese or iron oxides.
Lore & History
Historically known as the 'Stone of Endurance' and a talisman for warriors in ancient Egypt and Native American cultures. Symbolically associated with the Root Chakra, it is traditionally believed to provide grounding, stability, and physical strength.