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Boleite
Boleite

Alexandrite
Alexandrite



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Boleite
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Alexandrite

Boleite and Alexandrite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

-
-

Dispersion

0.070.02
0.005 1
👆🏻

Transparency

Transparent
Transparent, Transparent to nearly opaque

Refractive Index

2.051.739-1.770
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

Isometric
Orthorhombic

Birefringence

0.0100.007-0.010
0 0.296
👆🏻

Clarity

Transparent
Transparent

Boleite and Alexandrite Optic Character

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

Boleite and Alexandrite Transparency

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