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Zincite
Zincite

Phenakite
Phenakite



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Zincite
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Phenakite

Zincite and Phenakite Optical Properties

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Optical Properties

Luster

Subadamantine, Resinous
Vitreous

Pleochroism

Very weak
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli

Dispersion

0.160.02
0.005 1
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Transparency

TransparentRobert C. Kammerling
-

Refractive Index

2.013-2.0291.650-1.695
1 3.25
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Optic Character

-
-

Crystal System

Hexagonal
Trigonal

Birefringence

0.0160.016
0 0.296
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Clarity

TransparentRobert C. Kammerling
TransparentUlrich Henn and Claudio C. Milisenda

Zincite and Phenakite Optic Character

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

Similar to their colors, Zincite and Phenakite 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.