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Carnelian
Carnelian

Turquoise
Turquoise



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Carnelian
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Turquoise

Carnelian and Turquoise Optical Properties

Optical Properties

Luster

Vitreous
Waxy

Pleochroism

-
Weak

Dispersion

0.010.03
0.005 1
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Transparency

Translucent, Transparent to nearly opaque
Translucent, Opaque

Refractive Index

1.535-1.5391.610-1.650
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Triclinic

Birefringence

0.003-0.0090.040
0 0.296
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Clarity

Translucent
Translucent

Carnelian and Turquoise Optic Character

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

Similar to their colors, Carnelian and Turquoise 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.