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Faustite
Faustite

Black Opal
Black Opal



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Faustite
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Black Opal

Optical Properties

Luster

Waxy
-

Pleochroism

-
-

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Translucent
Transparent, Translucent

Refractive Index

1.6121.370-1.470
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic Pinacoidal H-M Symbol ( 1) Space Group: P1
-

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Translucent
Transparent