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Carnelian
Carnelian

Phosphophyllite
Phosphophyllite



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Carnelian
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Phosphophyllite

Carnelian and Phosphophyllite Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

-
-

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

Translucent, Transparent to nearly opaque
-

Refractive Index

1.535-1.5391.595-1.621
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
-

Birefringence

0.003-0.0090.021
0 0.296
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Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Carnelian and Phosphophyllite Optic Character

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

Carnelian and Phosphophyllite Transparency

Similar to their colors, Carnelian and Phosphophyllite 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, Carnelian is Translucent and Transparent to nearly opaque while Carnelian is Translucent and Transparent to nearly opaque in appearance.