Red Jasper (Pinolith or Dragon Blood Style)
Silica var. Jasper (Microcrystalline Quartz) · Semi-Precious Gemstone / Decorative Stone
Crystal System
Trigonal symmetry; typically appears in massive, microcrystalline aggregates without visible crystal faces.
Mineral Group
Silicates (Tectosilicate)
Chemical Formula
SiO2 + Fe2O3 (Iron Oxide inclusions)
Formation Process
Formed through the infiltration of silica-rich fluids into volcanic or sedimentary rocks (hydrothermal or sedimentary precipitation).
About This Crystal
An opaque, microcrystalline variety of quartz. This specimen shows a deep reddish-brown base color with a high vitreous polish and a white/pinkish mottled or 'brecciated' pattern, resembling pinolith or certain jasp-agates.
Physical Characteristics
Color: Red-brown with white mottling; Streak: White; Cleavage: None; Fracture: Conchoidal; Specific Gravity: 2.58–2.91; Fluorescence: Typically inert.
Optical Properties
Refractive Index: Approx. 1.54; Birefringence: None (aggregate); Pleochroism: None; Optical Character: Aggregate (Opaque).
Hardness & Durability
Origin Region
Found globally; notable deposits in South Africa, India, Brazil, Australia, and the USA (Oregon, Idaho).
Hardness & Durability
Mohs Hardness: 6.5–7; Toughness: High (due to microcrystalline structure); Stability: Highly stable under light and heat.
Care & Maintenance
Clean with warm soapy water and a soft brush; safe for ultrasonic cleaning; avoid contact with hydrofluoric acid.
Rarity & Value
Common; value depends on the uniqueness of the pattern and polish quality. Generally affordable as tumbled stones or cabochons.
Special Characteristics
Distinctive brecciated or mottled appearance caused by quartz/carbonate inclusions within the iron-rich jasper matrix.
Lore & History
Historically used by ancient Egyptians and Native Americans for amulets and protective jewelry. In traditional lore, it is associated with the Root Chakra and believed to represent grounding and endurance.