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Stibiotantalite and Indicolite Blue Tourmaline Optical Properties


Indicolite Blue Tourmaline and Stibiotantalite Optical Properties


Optical Properties

Luster
Adamantine   
Not Available   

Pleochroism
Not Available   
Strong: dark blue light blueWalter Schumann   

Dispersion
Not Available   
0.02   
22

Transparency
Gemmological Tables (2004) More from other references   
Transparent, Translucent   

Refractive Index
2.37-2.45   
1.614-1.666   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Not Available   

Birefringence
0.08   
0.014-0.040   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Transparent   

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Stibiotantalite and Indicolite Blue Tourmaline Optic Character

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

Similar to their colors, Stibiotantalite and Indicolite Blue Tourmaline 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, Stibiotantalite is Gemmological Tables (2004) More from other references while Stibiotantalite is Gemmological Tables (2004) More from other references in appearance.

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