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Heliotrope
Heliotrope

Rubellite
Rubellite



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Heliotrope
X
Rubellite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
-
0.01
-
1.53-1.54
-
Trigonal
0.004
-
 
-
Strong: dark red pinkish-redHerve Nicolas Lazzarelli
0.02
Transparent, Translucent
1.614-1.666
-
-
0.014-0.040
Transparent