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Euclase
Euclase

Gedrite
Gedrite



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Euclase
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Gedrite

Euclase and Gedrite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak: colorless-(greenish) yellow
Weak to moderate

Dispersion

0.020.02
0.005 1
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Transparency

-
Transparent

Refractive Index

1.650-1.6771.625-1.718
1 3.25
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Optic Character

-
-

Crystal System

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

Birefringence

0.019-0.025-9999
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Euclase and Gedrite Optic Character

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

Euclase and Gedrite Transparency

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