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Cacoxenite
Cacoxenite

Topaz
Topaz



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Cacoxenite
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Topaz

Cacoxenite and Topaz Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Silky
visible: O = Pale yellow E = Canary yellow to yellow orange
0.03
-
1.575-1.585
-
Hexagonal
-9999
-
 
Vitreous
Weak
0.01
Transparent
1.606-1.644
-
Orthorhombic
0.008-0.011
TransparentUlrich Henn and Claudio C. Milisenda

Cacoxenite and Topaz Optic Character

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

Cacoxenite and Topaz Transparency

Similar to their colors, Cacoxenite 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, Cacoxenite is while Cacoxenite is in appearance.