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Gedrite
Gedrite

Phenakite
Phenakite



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Gedrite
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Phenakite

Gedrite and Phenakite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak to moderate
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli

Dispersion

0.020.02
0.005 1
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Transparency

Transparent
-

Refractive Index

1.625-1.7181.650-1.695
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Trigonal

Birefringence

-99990.016
0 0.296
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Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Gedrite and Phenakite Optic Character

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

Gedrite and Phenakite Transparency

Similar to their colors, Gedrite 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, Gedrite is Transparent while Gedrite is Transparent in appearance.