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Tavorite
Tavorite

Alexandrite
Alexandrite



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Tavorite
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Alexandrite

Tavorite and Alexandrite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Yellow-green colorlessAnthony et al
-

Dispersion

0.020.02
0.005 1
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Transparency

Transparent
Transparent, Transparent to nearly opaque

Refractive Index

11.739-1.770
1 3.25
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Optic Character

-
Biaxial/+

Crystal System

-
Orthorhombic

Birefringence

-99990.007-0.010
0 0.296
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Clarity

Transparent
Transparent

Tavorite and Alexandrite Optic Character

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

Tavorite and Alexandrite Transparency

Similar to their colors, Tavorite and Alexandrite 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, Tavorite is Transparent while Tavorite is Transparent in appearance.