mineral
Tumbled labradorite
Labradorite, a plagioclase feldspar: approximately (Ca,Na)(Al,Si)₄O₈
AI-generated identification · may be incorrectHardness 6–6.5 Mohs; typically gray to blue-green with vitreous luster and a triclinic crystal structure. The pale body and dark internal lines are visible here, though characteristic iridescent flashes are not apparent in this lighting.
Identified More mineral →
Explore Tumbled labradorite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness 6–6.5 Mohs; typically gray to blue-green with vitreous luster and a triclinic crystal structure. The pale body and dark internal lines are visible here, though characteristic iridescent flashes are not apparent in this lighting.
Formation & geological history
Forms as a feldspar in cooling igneous rocks, especially anorthosite and gabbro; specimens can be Precambrian, with age depending on their source deposit.
Uses & applications
Tumbled pieces are used in jewelry, ornaments, and mineral collections; labradorite is also used as decorative facing stone.
Geological facts
Its shifting, iridescent color effect is called labradorescence and comes from light interference within microscopic layers in the feldspar.
Field identification & locations
Often identified by gray feldspar with bright blue, green, or gold flashes when tilted under light. Major sources include Canada’s Labrador region, Madagascar, Finland, and Norway.
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