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Hiddenite
Hiddenite

Crocoite
Crocoite



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Hiddenite
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Crocoite

Hiddenite and Crocoite Optical Properties

Optical Properties

Luster

Vitreous
Adamantine

Pleochroism

Distinct trichroism: yellow green green blue greenHerve Nicolas Lazzarelli
Distinctly trichroic

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.657-1.6812.31-2.66
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n

Birefringence

0.014-0.016-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Hiddenite and Crocoite Optic Character

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

Similar to their colors, Hiddenite and Crocoite 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.