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Pollucite
Pollucite

Franklinite
Franklinite



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Pollucite
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Franklinite

Pollucite and Franklinite Optical Properties

Optical Properties

Luster

Vitreous, Greasy
-

Pleochroism

-
-

Dispersion

0.010.19
0.005 1
👆🏻

Transparency

Transparent, Translucent
Translucent

Refractive Index

1.517-1.525-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

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

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Transparent
Translucent

Pollucite and Franklinite Optic Character

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

Pollucite and Franklinite Transparency

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