Red Jasper
Quartz variety Jasper · Semi-Precious Gemstone / Decorative Stone
Crystal System
Trigonal (Microcrystalline); usually found in massive or microgranular habits.
Mineral Group
Silicates (Tectosilicate)
Chemical Formula
SiO2 (Silicon Dioxide) with impurities of Hematite (Fe2O3)
Formation Process
Primarily Sedimentary or Hydrothermal; forms from silica-rich fluids filling fissures or replacing organic matter, often during low-grade metamorphism.
About This Crystal
An opaque, microcrystalline variety of quartz. It features a deep brick-red to terracotta color with a dull to vitreous luster. This specimen is polished into a hexagonal point with visible white quartz veining.
Physical Characteristics
Color: Red; Streak: White; Cleavage: None; Fracture: Conchoidal to uneven; Specific Gravity: 2.58–2.91; Fluorescence: Typically inert.
Optical Properties
Refractive Index: 1.544–1.553; Birefringence: None (opaque); Diaphaneity: Opaque; Pleochroism: None.
Hardness & Durability
Origin Region
Brazil, India, South Africa, USA, and Madagascar. Formed in hydrothermal or sedimentary environments.
Hardness & Durability
Mohs Hardness: 6.5–7. High toughness and durability; excellent for daily jewelry wear and resistance to scratching.
Care & Maintenance
Safe to clean with warm soapy water and soft brushes. Generally resistant to light and common chemicals, but avoid harsh acids.
Rarity & Value
Common. Inexpensive; value is driven by color vibrancy, pattern aesthetics, and quality of the polish or carving.
Special Characteristics
Contains significant iron oxide (hematite) inclusions which provide the characteristic red color and opaqueness.
Lore & History
Historically known as a stone of endurance and protection. Used in ancient Egypt for amulets and in Native American cultures as a 'blood of Mother Earth' stone for grounding.