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Grossular
Grossular

Phenakite
Phenakite



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Grossular
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Phenakite

Grossular and Phenakite Optical Properties

Optical Properties

Luster

Greasy, Vitreous
Vitreous

Pleochroism

None
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.730-1.7601.650-1.695
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
Trigonal

Birefringence

0.0200.016
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
TransparentUlrich Henn and Claudio C. Milisenda

Grossular and Phenakite Optic Character

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

Grossular and Phenakite Transparency

Similar to their colors, Grossular 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, Grossular is while Grossular is in appearance.