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Tanzanite and Poudretteite Optical Properties


Poudretteite and Tanzanite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Present   
Colorless   

Dispersion
0.03   
14
Not Available   

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

Refractive Index
1.685-1.707   
1.511-1.532   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
Hexagonal   

Birefringence
0.006-0.018   
0.021   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
TransparentUlrich Henn and Claudio C. Milisenda   

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Tanzanite and Poudretteite Optic Character

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

Similar to their colors, Tanzanite and Poudretteite 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, Tanzanite is Translucent, Transparent and Transparent to translucent while Tanzanite is Translucent, Transparent and Transparent to translucent in appearance.

Semi Precious

Semi Precious


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