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Augelite
Augelite

Mottramite
Mottramite



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Augelite
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Mottramite

Augelite and Mottramite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Pearly
-
0.02
-
1.570-1.591
-
-
0.020-0.021
TransparentUlrich Henn and Claudio C. Milisenda
 
Greasy
Visible X=Y= canary yellow to greenish yellow
0.04
-
2.170
-
Orthorhombic
0.150
-

Augelite and Mottramite Optic Character

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

Augelite and Mottramite Transparency

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