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Zektzerite
Zektzerite

Blue John
Blue John



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Zektzerite
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Blue John

Optical Properties

Luster

Vitreous, Pearly
-

Pleochroism

-
-

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.582-1.5851.432-1.436
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

0.003-9999
0 0.296
👆🏻

Clarity

Transparent
Transparent