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Chlorastrolite and Thulite Optical Properties


Thulite and Chlorastrolite Optical Properties


Optical Properties

Luster
Chatoyant   
Vitreous   

Pleochroism
NilArthur Thomas   
Present   

Dispersion
Not Available   
Not Available   

Transparency
Gems   
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.   

Refractive Index
1.7   
1.695   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Orthorhombic   

Birefringence
0.010   
0.006-0.018   

Clarity
Gems   
OpaqueHerve Nicolas Lazzarelli   

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Chlorastrolite and Thulite Optic Character

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

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Chlorastrolite and Thulite Transparency

Similar to their colors, Chlorastrolite and Thulite 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, Chlorastrolite is Gems while Chlorastrolite is Gems in appearance.

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