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Hiddenite
Hiddenite

Mottramite
Mottramite



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Hiddenite
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Mottramite

Hiddenite and Mottramite Optical Properties

Optical Properties

Luster

Vitreous
Greasy

Pleochroism

Distinct trichroism: yellow green green blue greenHerve Nicolas Lazzarelli
Visible X=Y= canary yellow to greenish yellow

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.657-1.6812.170
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.014-0.0160.150
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Hiddenite and Mottramite Optic Character

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

Similar to their colors, Hiddenite and Mottramite 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.