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Chalcedony
Chalcedony

Pezzottaite
Pezzottaite



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Chalcedony
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Pezzottaite

Chalcedony and Pezzottaite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
Moderate dichroic

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Translucent, Translucent to opaque
Transparent

Refractive Index

1.530-1.5431.598-1.620
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Hexagonal

Birefringence

0.003-0.0090.008-0.011
0 0.296
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Clarity

Translucent
Transparent

Chalcedony and Pezzottaite Optic Character

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

Similar to their colors, Chalcedony and Pezzottaite 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.