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Hexagonite
Hexagonite

Thulite
Thulite



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Hexagonite
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Thulite

Hexagonite and Thulite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

bluish–red
Present

Dispersion

-0.02
0.005 1
👆🏻

Transparency

Transparent
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.

Refractive Index

1.599-1.6371.695
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

0.019-0.0280.006-0.018
0 0.296
👆🏻

Clarity

Transparent
OpaqueHerve Nicolas Lazzarelli

Hexagonite and Thulite Optic Character

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

Hexagonite and Thulite Transparency

Similar to their colors, Hexagonite and Thulite 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, Hexagonite is Transparent while Hexagonite is Transparent in appearance.