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Phenakite
Phenakite

Girasol
Girasol



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Phenakite
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Girasol

Phenakite and Girasol Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli
0.02
-
1.650-1.695
-
Trigonal
0.016
TransparentUlrich Henn and Claudio C. Milisenda
 
-
-
0.01
Transparent
1.37-1.52
-
-
-9999
Transparent

Phenakite and Girasol Optic Character

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

Phenakite and Girasol Transparency

Similar to their colors, Phenakite and Girasol 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, Phenakite is while Phenakite is in appearance.