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Hiddenite
Hiddenite

Franklinite
Franklinite



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Hiddenite
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Franklinite

Hiddenite and Franklinite Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

Distinct trichroism: yellow green green blue greenHerve Nicolas Lazzarelli
-

Dispersion

0.020.19
0.005 1
👆🏻

Transparency

Transparent
Translucent

Refractive Index

1.657-1.681-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

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

Birefringence

0.014-0.016-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Hiddenite and Franklinite Optic Character

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

Hiddenite and Franklinite Transparency

Similar to their colors, Hiddenite 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, Hiddenite is Transparent while Hiddenite is Transparent in appearance.