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Carnallite
Carnallite

Gedrite
Gedrite



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Carnallite
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Gedrite

Carnallite and Gedrite Optical Properties

Optical Properties

Luster

Greasy
Vitreous

Pleochroism

-
Weak to moderate

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.4671.625-1.718
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma

Birefringence

0.0270-9999
0 0.296
👆🏻

Clarity

-
Transparent

Carnallite and Gedrite Optic Character

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

Similar to their colors, Carnallite and Gedrite 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.