×

Annabergite
Annabergite

Mottramite
Mottramite



ADD
Compare
X
Annabergite
X
Mottramite

Annabergite and Mottramite Optical Properties

Optical Properties

Luster

Subadamantine, Pearly
Greasy

Pleochroism

-
Visible X=Y= canary yellow to greenish yellow

Dispersion

0.030.04
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.6222.170
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.0650.150
0 0.296
👆🏻

Clarity

-
-

Annabergite and Mottramite Optic Character

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

Annabergite and Mottramite Transparency

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