Rutilated Quartz
Quartz var. Rutilated Quartz · Semi-Precious Gemstone and Mineral Specimen
Crystal System
Trigonal, forming prismatic crystals with striated faces
Mineral Group
Silicates, specifically Tectosilicates
Chemical Formula
SiO2 with inclusions of TiO2
Formation Process
Hydrothermal and pegmatitic formation, where needle-like rutile crystals are trapped inside growing host quartz crystals
About This Crystal
Transparent to translucent quartz host material displaying distinct, golden needle-like or hair-like inclusions of rutile with a metallic to adamantine luster, creating striking visual patterns inside the stone
Physical Characteristics
Color is colorless to smoky with golden-yellow or reddish-brown rutile needles; white streak; conchoidal fracture; no distinct cleavage; specific gravity around 2.65; brittle tenacity
Optical Properties
Singly refractive or weakly doubly refractive with a low birefringence of 0.009; vitreous luster; refractive index of 1.544 to 1.553; displays notable inclusion patterns but no significant pleochroism
Hardness & Durability
Origin Region
Found in Brazil, Madagascar, Australia, India, and the USA; forms in hydrothermal veins and pegmatites
Hardness & Durability
Mohs hardness of 7 for the quartz host, making it durable for general jewelry use, though internal fractures around dense rutile inclusions can create weak points
Care & Maintenance
Clean with warm soapy water and a soft brush; avoid ultrasonic cleaners and harsh chemicals due to internal inclusions and fractures; store separately to prevent scratching softer stones
Rarity & Value
Common to uncommon depending on the density, clarity, and arrangement of the rutile needles; clear quartz with distinct, well-defined golden starburst or parallel needles commands higher prices
Special Characteristics
Features prominent golden rutilated needle inclusions, sometimes referred to historically as Venus hair stone or cupid's darts, creating unique internal landscape patterns
Lore & History
Historically associated with the hair of Venus, believed in modern metaphysical practices to amplify energy, promote spiritual growth, and provide clarity; linked primarily to the solar plexus and crown chakras