mineral
Rutilated Quartz
Rutile in Quartz (SiO2 with TiO2 inclusions)
AI-generated identification · may be incorrectHardness: 7 (Mohs scale), Color: Clear to smoky host with gold, black, or reddish-brown needle-like inclusions, Luster: Vitreous/Adamantine (needles), Crystal Structure: Trigonal host / Tetragonal needles, Specific Gravity: 2.65
Identified More mineral →
Explore Rutilated Quartz in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 7 (Mohs scale), Color: Clear to smoky host with gold, black, or reddish-brown needle-like inclusions, Luster: Vitreous/Adamantine (needles), Crystal Structure: Trigonal host / Tetragonal needles, Specific Gravity: 2.65
Formation & geological history
Formed in pegmatites and hydrothermal veins where rutile crystals grow within the quartz host as it cools and crystallizes. Predominantly found in metamorphic and igneous environments.
Uses & applications
Commonly used in jewelry as cabochons, pendants, and faceted stones. Highly valued by mineral collectors and used in metaphysical practices.
Geological facts
The needle-like inclusions are often referred to as 'Venus Hair' or 'Angel Hair.' While quartz is common, the presence of well-formed rutile needles makes each specimen unique naturally.
Field identification & locations
Identify in the field by the distinct needle-like inclusions that appear to be trapped inside solid transparent quartz. Common locations include Brazil, Madagascar, and Sri Lanka.
More like this
Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous