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Benitoite
Benitoite

Chrysoberyl
Chrysoberyl



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Benitoite
X
Chrysoberyl

Benitoite and Chrysoberyl Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

O = colorless; E = purple
X = red; Y = yellow-orange; Z = emerald-green

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent, Transparent to translucent

Refractive Index

1.757-1.8041.746-1.763
1 3.25
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Optic Character

-
Biaxial/+

Crystal System

Hexagonal
Orthorhombic

Birefringence

0.0470.007-0.013
0 0.296
👆🏻

Clarity

Transparent
Transparent

Benitoite and Chrysoberyl Optic Character

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

Benitoite and Chrysoberyl Transparency

Similar to their colors, Benitoite 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, Benitoite is Transparent while Benitoite is Transparent in appearance.