Labradorite

(Ca,Na)(Al,Si)4O8

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Labradorite is a plagioclase feldspar famous for its spectacular display of iridescent colors called labradorescence. When light enters the stone, it is reflected from internal structures, producing flashes of blue, gold, green, and copper. First discovered on the Isle of Paul in Labrador, Canada.

Crystal System Triclinic
Mineral Class 09 Silicates
Mohs Hardness 6.0-6.5
Specific Gravity 2.68-2.72
Color Gray, dark gray with labradorescence (blue, gold, green)
Luster Vitreous
Streak White
Cleavage Perfect {001}, good {010}
Fracture Conchoidal to uneven
Transparency Translucent
Crystal Habit Massive, tabular

Mohs Hardness

Mohs Hardness: 6.0 – 6.5
1 Soft10 Hard

Crystal System

Triclinic

Frequently Asked Questions

What is the hardness of Labradorite?
Labradorite has a Mohs hardness of 6.0-6.5.
What crystal system does Labradorite belong to?
Labradorite crystallizes in the Triclinic crystal system.
What color is Labradorite?
Labradorite is typically Gray, dark gray with labradorescence (blue, gold, green).
What type of luster does Labradorite have?
Labradorite exhibits a Vitreous luster.
What is the chemical formula of Labradorite?
The chemical formula of Labradorite is (Ca,Na)(Al,Si)4O8.