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Iolite
Iolite

Alabaster
Alabaster



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Iolite
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Alabaster
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Optical Properties

Luster

Vitreous
-

Pleochroism

-
-

Dispersion

0.02-
0.005 1
👆🏻

Transparency

Transparent, Translucent, Transparent to translucent
Translucent

Refractive Index

1.52-1.561.520-1.530
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

-99990.010
0 0.296
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Clarity

Transparent to translucent
Translucent