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Carnelian
Carnelian

Zincite
Zincite



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Carnelian
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Zincite

Carnelian and Zincite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Subadamantine, Resinous
1.2 Pleochroism
AbsentWalter Schumann
Very weak
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Transparent to nearly opaque
TransparentRobert C. Kammerling, The Journal of Gemmology (1995) More from other references
1.5 Refractive Index
1.535-1.5392.013-2.029
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Hexagonal
1.8 Birefringence
0.003-0.0090.016
Achroite
0 0.296
1.9 Clarity
Translucent
TransparentRobert C. Kammerling

Carnelian and Zincite Optic Character

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

Similar to their colors, Carnelian and Zincite 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.