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Hibschite and Alexandrite Optical Properties


Alexandrite and Hibschite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Semitransparent   
Transparent, Transparent to nearly opaque   

Refractive Index
Not Available   
1.739-1.770   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: I a3d   
Orthorhombic   

Birefringence
Not Available   
0.007-0.010   

Clarity
TranslucentAnthony et al   
Transparent   

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Hibschite and Alexandrite Optic Character

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

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Hibschite and Alexandrite Transparency

Similar to their colors, Hibschite 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, Hibschite is Semitransparent while Hibschite is Semitransparent in appearance.

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