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Carnallite
Carnallite

Phenakite
Phenakite



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Carnallite
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Phenakite

Carnallite and Phenakite Optical Properties

Optical Properties

Luster

Greasy
Vitreous

Pleochroism

-
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.4671.650-1.695
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

0.02700.016
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Carnallite and Phenakite Optic Character

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

Similar to their colors, Carnallite and Phenakite 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.