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Grossular
Grossular

Amazonite
Amazonite



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Grossular
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Amazonite

Grossular and Amazonite Optical Properties

Optical Properties

Luster

Greasy, Vitreous
Vitreous

Pleochroism

None
-

Dispersion

0.020.01
0.005 1
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Transparency

-
Translucent, Translucent to opaque

Refractive Index

1.730-1.7601.522-1.530
1 3.25
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Optic Character

-
-

Crystal System

cubic
Triclinic

Birefringence

0.0200.008-0.010
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Grossular and Amazonite Optic Character

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

Grossular and Amazonite Transparency

Similar to their colors, Grossular and Amazonite 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, Grossular is while Grossular is in appearance.