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Grossular
Grossular

Adularia
Adularia



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Grossular
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Adularia

Grossular and Adularia Optical Properties

Optical Properties

Luster

Greasy, Vitreous
-

Pleochroism

None
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
TransparentArthur Thomas

Refractive Index

1.730-1.7601.518-1.536
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
-

Birefringence

0.0200.005-0.008
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
TransparentArthur Thomas

Grossular and Adularia Optic Character

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

Similar to their colors, Grossular and Adularia 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.