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Hessonite
Hessonite

Taaffeite
Taaffeite



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Hessonite
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Taaffeite

Hessonite and Taaffeite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
Weak

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.742-1.7481.70-1.73
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Hexagonal

Birefringence

-99990.055
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Hessonite and Taaffeite Optic Character

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

Similar to their colors, Hessonite and Taaffeite 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.