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Charoite and Precious Opal Optical Properties


Precious Opal and Charoite Optical Properties


Optical Properties

Luster
Pearly, Fibrous, Chatoyant   
Not Available   

Pleochroism
NilArthur Thomas   
AbsentWalter Schumann   

Dispersion
Not Available   
None   

Transparency
Translucent   
Transparent, Translucent   

Refractive Index
1.545-1.560   
1.370-1.470   

Optic Character
Not Available   
Not Available   

Crystal System
Triclinic   
Not Available   

Birefringence
0.009   
Not Available   

Clarity
Translucent   
Transparent   

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<< Physical Properties

Charoite and Precious Opal Optic Character

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

Similar to their colors, Charoite and Precious Opal 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, Charoite is Translucent while Charoite is Translucent in appearance.

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