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Mimetite
Mimetite

Erythrite
Erythrite



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Mimetite
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Erythrite

Mimetite and Erythrite Optical Properties

Optical Properties

Luster

Resinous, Subadamantine
Subadamantine, Pearly

Pleochroism

Weak
Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red

Dispersion

0.040.03
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

2.106-2.2631.626-1.629
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
monoclinic

Birefringence

0.019-9999
0 0.296
👆🏻

Clarity

Translucent
-

Mimetite and Erythrite Optic Character

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

Mimetite and Erythrite Transparency

Similar to their colors, Mimetite and Erythrite 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, Mimetite is Translucent while Mimetite is Translucent in appearance.