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Topaz and Moissanite Optical Properties


Moissanite and Topaz Optical Properties


Optical Properties

Luster
Vitreous   
Adamantine   

Pleochroism
Weak   
NilArthur Thomas   

Dispersion
0.01   
26
0.10   
5

Transparency
Transparent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.606-1.644   
2.648-2.691   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
6H polytype   

Birefringence
0.008-0.011   
0.043   

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

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Topaz and Moissanite Optic Character

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

Similar to their colors, Topaz and Moissanite 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, Topaz is Transparent while Topaz is Transparent in appearance.

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