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Tantalite and Topaz Optical Properties


Topaz and Tantalite Optical Properties


Optical Properties

Luster
Resinous   
Vitreous   

Pleochroism
Not Available   
Weak   

Dispersion
Not Available   
0.01   
26

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

Refractive Index
2.190-2.457   
1.606-1.644   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
Orthorhombic   

Birefringence
0.083   
0.008-0.011   

Clarity
TransparentWalter Schumann   
TransparentUlrich Henn and Claudio C. Milisenda   

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Tantalite and Topaz Optic Character

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

Similar to their colors, Tantalite and Topaz 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, Tantalite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann while Tantalite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann in appearance.

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