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Topaz
Topaz

Beudantite
Beudantite



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Topaz
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Beudantite

Topaz and Beudantite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous, Resinous

Pleochroism

Weak
visible

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.606-1.6441.957
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

0.008-0.0110.014
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Topaz and Beudantite Optic Character

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

Topaz and Beudantite Transparency

Similar to their colors, Topaz and Beudantite 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.