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Topaz
Topaz

Cerussite
Cerussite



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Topaz
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Cerussite

Topaz and Cerussite Optical Properties

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Optical Properties

Luster

Vitreous
Adamantine, Vitreous, Resinous

Pleochroism

Weak
-

Dispersion

0.010.06
0.005 1
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Transparency

Transparent
Transparent, Translucent

Refractive Index

1.606-1.6441.803-2.078
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.008-0.0110.273
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Topaz and Cerussite Optic Character

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

Similar to their colors, Topaz and Cerussite 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.