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Kyanite
Kyanite

Beryl
Beryl



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Kyanite
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Beryl

Kyanite and Beryl Optical Properties

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Optical Properties

Luster

Vitreous, Pearly
Vitreous, Resinous

Pleochroism

Trichroic
Weak to distinct

Dispersion

0.020.01
0.005 1
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Transparency

-
Transparent, Transparent to opaque

Refractive Index

1.71-1.741.560-1.604
1 3.25
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Optic Character

-
-

Crystal System

Triclinic
Hexagonal

Birefringence

-99990.0040-0.0070
0 0.296
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Clarity

-
Transparent

Kyanite and Beryl Optic Character

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

Kyanite and Beryl Transparency

Similar to their colors, Kyanite and Beryl 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, Kyanite is while Kyanite is in appearance.