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Mottramite
Mottramite

Hessonite Garnet
Hessonite Garnet



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Mottramite
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Hessonite Garnet

Mottramite and Hessonite Garnet Optical Properties

Optical Properties

Luster

Greasy
-

Pleochroism

Visible X=Y= canary yellow to greenish yellow
-

Dispersion

0.040.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

2.1701.72-1.75
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Isometric

Birefringence

0.150-9999
0 0.296
👆🏻

Clarity

-
-

Mottramite and Hessonite Garnet Optic Character

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

Mottramite and Hessonite Garnet Transparency

Similar to their colors, Mottramite and Hessonite Garnet 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, Mottramite is while Mottramite is in appearance.