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Chlorapatite and Alexandrite Optical Properties


Alexandrite and Chlorapatite Optical Properties


Optical Properties

Luster
Not Available   
Vitreous   

Pleochroism
Weak to moderate; in pale colors.Anthony et al   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
Transparent, Transparent to nearly opaque   

Refractive Index
1.665-1.667   
1.739-1.770   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Not Available   
Orthorhombic   

Birefringence
Not Available   
0.007-0.010   

Clarity
Transparent   
Transparent   

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Chlorapatite and Alexandrite Optic Character

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

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

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