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Almandine
Almandine

Nephrite
Nephrite



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Almandine
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Nephrite

Almandine and Nephrite Optical Properties

Optical Properties

Luster

Greasy, Vitreous
Vitreous, Greasy

Pleochroism

None
None

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.770-1.8201.600-1.627
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
monoclinic

Birefringence

-99990.027
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Almandine and Nephrite Optic Character

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

Almandine and Nephrite Transparency

Similar to their colors, Almandine and Nephrite 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, Almandine is while Almandine is in appearance.