Fire Quartz
Quartz var. Hematoid Quartz / Fire Quartz · Semi-Precious Gemstone and Mineral Specimen
Crystal System
Trigonal, shaped as a polished cabochon
Mineral Group
Silicates (Subgroup: Tectosilicates)
Chemical Formula
SiO2 with inclusions of Fe2O3 (Hematite)
Formation Process
Hydrothermal and magmatic processes where silica-rich fluids crystallize around or trap iron oxide/hematite and goethite particles
About This Crystal
A polished oval cabochon displaying high transparency, a vitreous luster, and internal fracturing with iridescent or fiery reflective inclusions scattered throughout the matrix
Physical Characteristics
Colorless to pale pink body with red, golden, or iridescent reflective internal flashes; white streak; no cleavage; conchoidal fracture; specific gravity around 2.65; brittle tenacity; exhibits piezoelectricity
Optical Properties
Singly or doubly refractive with a refractive index of approximately 1.544 to 1.553, weak birefringence, and internal light scattering causing localized iridescence from inclusions
Hardness & Durability
Origin Region
Madagascar, Brazil, and the USA; typically forms in hydrothermal veins and pegmatites
Hardness & Durability
Mohs hardness of 7; good durability and wearability for jewelry, though internal fractures may create slight vulnerability to sharp impacts
Care & Maintenance
Clean with warm soapy water and a soft brush; avoid harsh chemicals, ultrasonic cleaners if heavily fractured, and prolonged direct sunlight to protect any surface treatments
Rarity & Value
Common to uncommon; value depends on the clarity of the quartz and the density, pattern, and color of the internal inclusions, generally accessible in price
Special Characteristics
Contains prominent internal fracture planes that capture light and produce a shimmering, fiery, or rainbow-like iridescence often enhanced by the presence of micro-hematite or goethite
Lore & History
Often associated in modern crystal healing with grounding chaotic energies, boosting focus, balancing the root chakra, and transmuting negative vibrations into universal love and vitality