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Charoite and Manganotantalite Optical Properties


Manganotantalite and Charoite Optical Properties


Optical Properties

Luster
Pearly, Fibrous, Chatoyant   
Not Available   

Pleochroism
NilArthur Thomas   
Sometimes strongArthur Thomas   

Dispersion
Not Available   
Not Available   

Transparency
Translucent   
TransparentWalter Schumann, Gemstones of the world (2001) More from other references   

Refractive Index
1.545-1.560   
2.19-2.34   

Optic Character
Not Available   
Not Available   

Crystal System
Triclinic   
Not Available   

Birefringence
0.009   
0.015   

Clarity
Translucent   
TransparentWalter Schumann   

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Charoite and Manganotantalite Optic Character

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

Similar to their colors, Charoite and Manganotantalite 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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