Red Hematoid Quartz (Fire Quartz)
Silicon Dioxide with Hematite inclusions (Quartz var. Hematite) · Semi-Precious Gemstone / Mineral Specimen
Crystal System
Trigonal system; habit is typically massive or prismatic, but this specimen is a polished point exhibiting conchoidal fracture patterns.
Mineral Group
Silicates (Tectosilicate subgroup)
Chemical Formula
SiO2 + Fe2O3
Formation Process
Hydrothermal formation where silica-rich fluids crystallize in veins, with iron oxide (hematite) leeching into the internal fractures during or after growth.
About This Crystal
A translucent to opaque polished quartz point featuring heavy internal veining of reddish-orange to brown hematite. The luster is vitreous (glassy), and the surface shows internal rainbow iris effects due to light interference in fractures.
Physical Characteristics
Color: White/clear base with red-orange inclusions; Streak: White; Fracture: Conchoidal; Specific Gravity: 2.65; Fluorescence: Generally inert under UV light.
Optical Properties
Uniaxial positive; Refractive Index: 1.544–1.553; exhibit internal reflections and rainbows along fracture planes; non-pleochroic.
Hardness & Durability
Origin Region
Madagascar and Brazil are the primary geographic sources; typically found in igneous and metamorphic environments.
Hardness & Durability
Mohs Hardness: 7; Toughness: Fair to Good; very stable for jewelry and display, though internal fractures make it susceptible to hard impacts.
Care & Maintenance
Wash with warm soapy water; avoid sudden temperature changes which could expand internal inclusions; safe in sunlight though some iron oxides can darken over geologic time.
Rarity & Value
Common; Value is determined by the density of the red inclusions and the clarity of the host quartz. Often sold as affordable decorative specimens.
Special Characteristics
Displays 'Iris' or rainbow inclusions where light refracts through internal cracks; features distinct 'phantom' like zones of concentrated iron oxide.
Lore & History
Historically used as a 'grounding' stone due to the iron content; traditionally associated with the Root Chakra and believed to balance physical and emotional energies.