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Hessonite
Hessonite

Gedrite
Gedrite



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Hessonite
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Gedrite

Hessonite and Gedrite Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

-
Weak to moderate

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.742-1.7481.625-1.718
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Hessonite and Gedrite Optic Character

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

Hessonite and Gedrite Transparency

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