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Euclase
Euclase

Erythrite
Erythrite



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Euclase
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Erythrite

Euclase and Erythrite Optical Properties

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Optical Properties

Luster

Vitreous
Subadamantine, Pearly

Pleochroism

Weak: colorless-(greenish) yellow
Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.650-1.6771.626-1.629
1 3.25
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Optic Character

-
-

Crystal System

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

Birefringence

0.019-0.025-9999
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Euclase and Erythrite Optic Character

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

Euclase and Erythrite Transparency

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