Labradorite tumbled
A variety of Labradorite
What is Labradorite tumbled?
Labradorite tumbled seems to have multiple colors including blue, green, and orange which are actually light rays reflected from different twinning surfaces of the stone. This is known as the ‘Schiller’ effect. Labradorite tumbled was first found in Canada; now there are mines in Finland, Russia, and Madagascar. It is liked for its shimmering iridescence and is popular for gemstones and cabochons.
Optical Properties
- Refractive Index
- 1.554-1.573
- Birefringence
- 0.007-0.011
- Pleochroism
- Red stones from the Congo - weak; Green stones - distinct: greenish yellow to bluish green
- Optical Character
- Biaxial positive
- Dispersion
- 0.012
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Labradorite tumbled Localities Map
See where Labradorite tumbled is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Streak
- White
Chemical Properties
- Chemical Formula
- (Ca, Na)[Al(Al, Si)Si2O8]
- Elements
- Al, Ca, Na, O, Si
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