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Grossular Garnet
Grossular Garnet

Mottramite
Mottramite



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Grossular Garnet
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Mottramite

Grossular Garnet and Mottramite Optical Properties

Optical Properties

Luster

Vitreous, Adamantine
Greasy

Pleochroism

-
Visible X=Y= canary yellow to greenish yellow

Dispersion

0.030.04
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.738-1.7452.170
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Isometric
Orthorhombic

Birefringence

-99990.150
0 0.296
👆🏻

Clarity

Transparent
-

Grossular Garnet and Mottramite Optic Character

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

Similar to their colors, Grossular Garnet and Mottramite 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.