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Indicolite Blue Tourmaline and Purpurite Optical Properties


Purpurite and Indicolite Blue Tourmaline Optical Properties


Optical Properties

Luster
Not Available   
Not Available   

Pleochroism
Strong: dark blue light blueWalter Schumann   
StrongArthur Thomas   

Dispersion
0.02   
22
Not Available   

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

Refractive Index
1.614-1.666   
1.85-1.92   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Orthorhombic   

Birefringence
0.014-0.040   
0.070   

Clarity
Transparent   
TranslucentWalter Schumann   

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Indicolite Blue Tourmaline and Purpurite Optic Character

Indicolite Blue Tourmaline and Purpurite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Indicolite Blue Tourmaline and Purpurite 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 Indicolite Blue Tourmaline and Purpurite 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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Indicolite Blue Tourmaline and Purpurite Transparency

Similar to their colors, Indicolite Blue Tourmaline and Purpurite 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, Indicolite Blue Tourmaline is Translucent and Transparent while Indicolite Blue Tourmaline is Translucent and Transparent in appearance.

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