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Phenakite
Phenakite

Amblygonite
Amblygonite



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Phenakite
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Amblygonite

Phenakite and Amblygonite Optical Properties

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
 
Vitreous, Pearly
weak to none
0.01
-
1.578-1.646
Biaxial/+
Triclinic
0.020-0.030
TransparentUlrich Henn and Claudio C. Milisenda

Phenakite and Amblygonite Optic Character

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

Similar to their colors, Phenakite and Amblygonite 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.