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Indicolite Blue Tourmaline and Proustite Optical Properties


Proustite and Indicolite Blue Tourmaline Optical Properties


Optical Properties

Luster
Not Available   
Adamantine   

Pleochroism
Strong: dark blue light blueWalter Schumann   
Moderate; cochineal-red to blood-red   

Dispersion
0.02   
22
Not Available   

Transparency
Transparent, Translucent   
OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Rarely transparentMore from other references   

Refractive Index
1.614-1.666   
2.792-3.087   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Trigonal   

Birefringence
0.014-0.040   
0.295-0.296   

Clarity
Transparent   
OpaqueUlrich Henn and Claudio C. Milisenda   

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Indicolite Blue Tourmaline and Proustite Optic Character

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

Similar to their colors, Indicolite Blue Tourmaline and Proustite 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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