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Carnallite
Carnallite

Thulite
Thulite



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Carnallite
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Thulite

Carnallite and Thulite Optical Properties

Optical Properties

Luster

Greasy
Vitreous

Pleochroism

-
Present

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

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

Refractive Index

1.4671.695
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.02700.006-0.018
0 0.296
👆🏻

Clarity

-
OpaqueHerve Nicolas Lazzarelli

Carnallite and Thulite Optic Character

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

Carnallite and Thulite Transparency

Similar to their colors, Carnallite 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, Carnallite is while Carnallite is in appearance.