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Franklinite
Franklinite

Ulexite
Ulexite



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Franklinite
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Ulexite

Franklinite and Ulexite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
-
0.19
Translucent
-9999
-
Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m
-9999
Translucent
 
-
-
0.06
Transparent
1.491-1.520
-
-
0.029
Transparent

Franklinite and Ulexite Optic Character

Franklinite and Ulexite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Franklinite Vs Ulexite like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Franklinite and Ulexite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Franklinite and Ulexite Transparency

Similar to their colors, Franklinite and Ulexite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Franklinite is while Franklinite is in appearance.