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Erythrite
Erythrite

Inderite
Inderite



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Erythrite
X
Inderite

Erythrite and Inderite Optical Properties

Optical Properties

Luster

Subadamantine, Pearly
Vitreous, Pearly, Greasy

Pleochroism

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

Dispersion

0.03-
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.626-1.6291.488-1.505
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

monoclinic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a

Birefringence

-99990.017
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Erythrite and Inderite Optic Character

Erythrite and Inderite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Erythrite and Inderite 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 Erythrite and Inderite 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. Inderite has Biaxial/+ character.

Erythrite and Inderite Transparency

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