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Lizardite
Lizardite

Alexandrite
Alexandrite



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Lizardite
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Alexandrite

Lizardite and Alexandrite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
-

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

TranslucentAnthony et al
Transparent, Transparent to nearly opaque

Refractive Index

1.538-1.5601.739-1.770
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

TranslucentAnthony et al
Transparent

Lizardite and Alexandrite Optic Character

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

Lizardite and Alexandrite Transparency

Similar to their colors, Lizardite 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, Lizardite is TranslucentAnthony et al while Lizardite is TranslucentAnthony et al in appearance.