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Black Opal
Black Opal

Shattuckite
Shattuckite



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Black Opal
X
Shattuckite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
-
0.01
Transparent, Translucent
1.370-1.470
-
-
-9999
Transparent
 
Silky
X = very pale blue; Y = pale blue; Z = deep blue
0.02
Translucent
1.752-1.815
-
Orthorhombic
0.063
Translucent