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Umbalite
Umbalite
☒

Magnetite
Magnetite
☒



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Umbalite
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Magnetite
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Optical Properties

Luster

-
-

Pleochroism

-
-

Dispersion

0.020.20
0.005 1
👆🏻

Transparency

TransparentGemdat.org
-

Refractive Index

1.730-1.8202.42
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
-

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

TransparentGemdat.org
-

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