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Mottramite
Mottramite

Verdelite
Verdelite



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Mottramite
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Verdelite

Mottramite and Verdelite Optical Properties

Optical Properties

Luster

Greasy
-

Pleochroism

Visible X=Y= canary yellow to greenish yellow
Strong: dark green yellow

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

2.1701.614-1.666
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

0.1500.014-0.040
0 0.296
👆🏻

Clarity

-
Transparent

Mottramite and Verdelite Optic Character

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

Similar to their colors, Mottramite and Verdelite 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.