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Prasiolite
Prasiolite

Almandine
Almandine



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Prasiolite
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Almandine

Prasiolite and Almandine Optical Properties

Optical Properties

Luster

Vitreous
Greasy, Vitreous

Pleochroism

Very weak: light green pale greenWalter Schumann
None

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.544-1.5531.770-1.820
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
cubic

Birefringence

0.009-9999
0 0.296
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Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Prasiolite and Almandine Optic Character

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

Prasiolite and Almandine Transparency

Similar to their colors, Prasiolite and Almandine 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, Prasiolite is Transparent and Translucent while Prasiolite is Transparent and Translucent in appearance.