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Bytownite
Bytownite
☒

Common Opal
Common Opal
☒



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Bytownite
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Common Opal
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Optical Properties

Luster

Vitreous, Pearly
-

Pleochroism

colorless.
-

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Transparent
Translucent

Refractive Index

1.561-1.5831.37-1.52
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
-

Birefringence

0.010-0.011-9999
0 0.296
👆🏻

Clarity

Transparent
Translucent

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