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Hibonite
Hibonite

Chrysoberyl
Chrysoberyl



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Hibonite
X
Chrysoberyl

Hibonite and Chrysoberyl Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

O = brownish gray; E = gray
X = red; Y = yellow-orange; Z = emerald-green

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent, Transparent to translucent

Refractive Index

1.79-1.8071.746-1.763
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

Hexagonal
Orthorhombic

Birefringence

-99990.007-0.013
0 0.296
👆🏻

Clarity

-
Transparent

Hibonite and Chrysoberyl Optic Character

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

Hibonite and Chrysoberyl Transparency

Similar to their colors, Hibonite and Chrysoberyl 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, Hibonite is while Hibonite is in appearance.