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Herderite
Herderite

Kornerupine
Kornerupine



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Herderite
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Kornerupine

Herderite and Kornerupine Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
X = colorless to green; Y = colorless

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.587-1.6421.660-1.685
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.028-0.0320.012-0.017
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Herderite and Kornerupine Optic Character

Herderite and Kornerupine optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Herderite and Kornerupine 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 Herderite and Kornerupine 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. Herderite has Biaxial/+ character.

Herderite and Kornerupine Transparency

Similar to their colors, Herderite and Kornerupine 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, Herderite is Transparent while Herderite is Transparent in appearance.