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Amblygonite
Amblygonite

Friedelite
Friedelite



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Amblygonite
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Friedelite

Amblygonite and Friedelite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Pearly
weak to none
0.01
-
1.578-1.646
Biaxial/+
Triclinic
0.020-0.030
TransparentUlrich Henn and Claudio C. Milisenda
 
-
-
0.04
Translucent
1.627-1.663
-
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
0.032-0.035
Translucent

Amblygonite and Friedelite Optic Character

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

Amblygonite and Friedelite Transparency

Similar to their colors, Amblygonite and Friedelite 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, Amblygonite is while Amblygonite is in appearance.