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Friedelite
Friedelite

Augelite
Augelite



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Friedelite
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Augelite

Friedelite and Augelite Optical Properties

Optical Properties

Luster

-
Pearly

Pleochroism

-
-

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.627-1.6631.570-1.591
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
-

Birefringence

0.032-0.0350.020-0.021
0 0.296
👆🏻

Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Friedelite and Augelite Optic Character

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

Friedelite and Augelite Transparency

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