mineral
Labradorite
Plagioclase Feldspar (Ca,Na)(Al,Si)4O8
AI-generated identification · may be incorrectHardness of 6-6.5 on the Mohs scale, dark gray to smoky green color, vitreous to pearly luster, and distinct labradorescence (iridescent play of colors).
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Physical properties
Hardness of 6-6.5 on the Mohs scale, dark gray to smoky green color, vitreous to pearly luster, and distinct labradorescence (iridescent play of colors).
Formation & geological history
Forms in mafic igneous rocks like basalt and gabbro through slow cooling in magma chambers.
Uses & applications
Widely used as a gemstone in jewelry, for decorative objects, and highly sought after by mineral collectors.
Geological facts
Labradorite is renowned for its optical phenomenon called labradorescence, caused by light diffraction in microscopic lamellae layers.
Field identification & locations
Identified easily by its dark base color combined with flashes of peacock blue, green, and gold when rotated under light. Commonly sourced from Canada, Madagascar, and Finland.
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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
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous