×

Verdite
Verdite

Mottramite
Mottramite



ADD
Compare
X
Verdite
X
Mottramite

Verdite and Mottramite Optical Properties

Optical Properties

Luster

Vitreous, Silky
Greasy

Pleochroism

Extreme
Visible X=Y= canary yellow to greenish yellow

Dispersion

0.030.04
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.5802.170
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c
Orthorhombic

Birefringence

-99990.150
0 0.296
👆🏻

Clarity

Translucent
-

Verdite and Mottramite Optic Character

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

Verdite and Mottramite Transparency

Similar to their colors, Verdite 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, Verdite is Translucent while Verdite is Translucent in appearance.