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Erythrite
Erythrite

Gedrite
Gedrite



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Erythrite
X
Gedrite

Erythrite and Gedrite Optical Properties

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Optical Properties

Luster

Subadamantine, Pearly
Vitreous

Pleochroism

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

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.626-1.6291.625-1.718
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma

Birefringence

-9999-9999
0 0.296
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Clarity

-
Transparent

Erythrite and Gedrite Optic Character

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

Erythrite and Gedrite Transparency

Similar to their colors, Erythrite and Gedrite 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.