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Mottramite
Mottramite

Marialite
Marialite



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Mottramite
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Marialite

Mottramite and Marialite Optical Properties

Optical Properties

Luster

Greasy
Vitreous, Pearly, Resinous

Pleochroism

Visible X=Y= canary yellow to greenish yellow
-

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

2.1701.540-1.550
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
tetragonal

Birefringence

0.1500.004-0.008
0 0.296
👆🏻

Clarity

-
Transparent

Mottramite and Marialite Optic Character

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

Similar to their colors, Mottramite and Marialite 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.