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Chalcedony
Chalcedony

Beryllonite
Beryllonite



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Chalcedony
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Beryllonite

Chalcedony and Beryllonite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Adamantine, Pearly

Pleochroism

-
-

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Translucent, Translucent to opaque
-

Refractive Index

1.530-1.5431.552-1.562
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
monoclinic

Birefringence

0.003-0.0090.009
0 0.296
👆🏻

Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Chalcedony and Beryllonite Optic Character

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

Similar to their colors, Chalcedony and Beryllonite 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.