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Zincite
Zincite

Benitoite
Benitoite



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Zincite
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Benitoite

Zincite and Benitoite Optical Properties

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Optical Properties

Luster

Subadamantine, Resinous
Vitreous

Pleochroism

Very weak
O = colorless; E = purple

Dispersion

0.160.04
0.005 1
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Transparency

TransparentRobert C. Kammerling
Transparent

Refractive Index

2.013-2.0291.757-1.804
1 3.25
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Optic Character

-
-

Crystal System

Hexagonal
Hexagonal

Birefringence

0.0160.047
0 0.296
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Clarity

TransparentRobert C. Kammerling
Transparent

Zincite and Benitoite Optic Character

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

Zincite and Benitoite Transparency

Similar to their colors, Zincite and Benitoite 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, Zincite is TransparentRobert C. Kammerling while Zincite is TransparentRobert C. Kammerling in appearance.