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Thomsonite
Thomsonite

Hiddenite
Hiddenite



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Thomsonite
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Hiddenite

Thomsonite and Hiddenite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

-
Distinct trichroism: yellow green green blue greenHerve Nicolas Lazzarelli

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Translucent
Transparent

Refractive Index

1.510-1.5501.657-1.681
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.015-0.0200.014-0.016
0 0.296
👆🏻

Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Thomsonite and Hiddenite Optic Character

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

Thomsonite and Hiddenite Transparency

Similar to their colors, Thomsonite and Hiddenite 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, Thomsonite is Translucent while Thomsonite is Translucent in appearance.