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Carnelian
Carnelian

Brookite
Brookite



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Carnelian
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Brookite

Carnelian and Brookite Optical Properties

Optical Properties

Luster

Vitreous
Adamantine

Pleochroism

-
Very weak

Dispersion

0.010.20
0.005 1
👆🏻

Transparency

Translucent, Transparent to nearly opaque
-

Refractive Index

1.535-1.5392.583-2.741
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

0.003-0.0090.117
0 0.296
👆🏻

Clarity

Translucent
-

Carnelian and Brookite Optic Character

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

Similar to their colors, Carnelian and Brookite 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.