Labradorite
Feldspar group, Plagioclase series, Labradorite · Semi-Precious Gemstone / Decorative Stone
Crystal System
Triclinic, typically found in massive, granular, or tabular habits
Mineral Group
Silicates, specifically Tectosilicates
Chemical Formula
(Na,Ca)(Al,Si)4O8
Formation Process
Igneous and metamorphic rocks, commonly found in mafic igneous rocks like basalt, gabbro, and anorthosite, as well as in pegmatites
About This Crystal
An opaque to translucent mineral displaying a dark greyish-green base with a striking flash of iridescent blue and green optical effect known as labradorescence
Physical Characteristics
Color ranges from dark grey, brown, or green with metallic or iridescent flashes. Streak is white. Cleavage is perfect in two directions intersecting at approximately 86 degrees. Fracture is uneven to conchoidal. Specific gravity is around 2.68 to 2.72. Tenacity is brittle.
Optical Properties
Biaxial positive with two refractive indices ranging from approximately 1.559 to 1.568. Exhibits strong labradorescence, a schiller effect caused by sub-microscopic lamellar intergrowths
Hardness & Durability
Origin Region
Madagascar, Finland, Canada (Labrador), Australia, Mexico, and Russia
Hardness & Durability
Mohs hardness of 6 to 6.5. Moderate durability, susceptible to scratching by quartz and harder minerals. Good cleavage means it can fracture along planes under sharp impact
Care & Maintenance
Clean with warm soapy water and a soft brush. Avoid ultrasonic cleaners, steam cleaners, and harsh chemical acids or prolonged exposure to strong acids. Store separately from harder gemstones to prevent scratching
Rarity & Value
Common to uncommon, highly valued for specimens displaying vibrant multi-colored labradorescence. Price is generally affordable for raw and tumbled pieces, increasing for high-grade gem cuts
Special Characteristics
Labradorescence, an optical phenomenon creating iridescent flashes of blue, green, gold, and sometimes copper or violet light when viewed at specific angles
Lore & History
Discovered in 1770 on the Isle of Paul in Labrador, Canada, and featured in Inuit folklore where it was believed to have fallen from the frozen fires of the Aurora Borealis. In modern crystal healing, it is associated with the Third Eye and Throat chakras, symbolizing transformation, intuition, and inner strength