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Moroxite
Moroxite

Alexandrite
Alexandrite



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Moroxite
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Alexandrite

Moroxite and Alexandrite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
-

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

-
Transparent, Transparent to nearly opaque

Refractive Index

1.628-1.6511.739-1.770
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

-
Orthorhombic

Birefringence

0.002-0.0080.007-0.010
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Moroxite and Alexandrite Optic Character

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

Moroxite and Alexandrite Transparency

Similar to their colors, Moroxite 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, Moroxite is while Moroxite is in appearance.