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Mottramite
Mottramite

Augelite
Augelite



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Mottramite
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Augelite

Mottramite and Augelite Optical Properties

Optical Properties

Luster

Greasy
Pearly

Pleochroism

Visible X=Y= canary yellow to greenish yellow
-

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

2.1701.570-1.591
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

0.1500.020-0.021
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Mottramite and Augelite Optic Character

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

Mottramite and Augelite Transparency

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