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Chalcedony
Chalcedony

Moissanite
Moissanite



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Chalcedony
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Moissanite

Chalcedony and Moissanite Optical Properties

Optical Properties

Luster

Vitreous
Adamantine

Pleochroism

-
-

Dispersion

0.010.10
0.005 1
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Transparency

Translucent, Translucent to opaque
-

Refractive Index

1.530-1.5432.648-2.691
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
6H polytype

Birefringence

0.003-0.0090.043
0 0.296
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Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Chalcedony and Moissanite Optic Character

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

Chalcedony and Moissanite Transparency

Similar to their colors, Chalcedony 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, Chalcedony is Translucent and Translucent to opaque while Chalcedony is Translucent and Translucent to opaque in appearance.