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Grossular Garnet
Grossular Garnet

Dravite
Dravite



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Grossular Garnet
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Dravite

Grossular Garnet and Dravite Optical Properties

Optical Properties

Luster

Vitreous, Adamantine
Vitreous

Pleochroism

-
Very strong: pale yellow colorless

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.738-1.7451.614-1.666
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Isometric
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

Birefringence

-99990.014-0.032
0 0.296
👆🏻

Clarity

Transparent
Transparent

Grossular Garnet and Dravite Optic Character

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

Similar to their colors, Grossular Garnet and Dravite 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 Garnet is Transparent while Grossular Garnet is Transparent in appearance.