Labradorite

The aurora in a stone

Labradorite, a mineral specimen
Mineral

Labradorite is a feldspar mineral renowned for its spectacular play of iridescent colors known as labradorescence. When light enters the stone and strikes twinning surfaces within, it reflects back brilliant flashes of blue, green, gold, and orange.

Composition

calcium-sodium aluminosilicate (plagioclase feldspar)

Where Found

Labrador (Canada), Finland (as spectrolite), Madagascar, Ukraine

Mohs Hardness

6-6.5

Fun Fact

Inuit legends say the Northern Lights were once trapped in rocks along the Labrador coast, and a warrior freed most of them with his spear — but some remained, becoming labradorite.

Test Your Knowledge

What physical phenomenon causes labradorite's iridescent colour flashes?

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