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Franklinite
Franklinite

Witherite
Witherite



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Franklinite
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Witherite

Franklinite and Witherite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
-

Dispersion

0.190.03
0.005 1
👆🏻

Transparency

Translucent
Transparent, Translucent

Refractive Index

-99991.529-1.680
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m
-

Birefringence

-99990.148
0 0.296
👆🏻

Clarity

Translucent
Transparent

Franklinite and Witherite Optic Character

Franklinite and Witherite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Franklinite and Witherite Physical Properties 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 Witherite 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 Witherite Transparency

Similar to their colors, Franklinite and Witherite 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 Translucent while Franklinite is Translucent in appearance.