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Mottramite
Mottramite

Meionite
Meionite



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Mottramite
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Meionite

Mottramite and Meionite Optical Properties

Optical Properties

Luster

Greasy
Vitreous, Resinous

Pleochroism

Visible X=Y= canary yellow to greenish yellow
-

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

2.1701.556-1.600
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

0.1500.024-0.037
0 0.296
👆🏻

Clarity

-
Transparent

Mottramite and Meionite Optic Character

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

Similar to their colors, Mottramite and Meionite 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.