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Euclase
Euclase

Faustite
Faustite



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Euclase
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Faustite

Euclase and Faustite Optical Properties

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Optical Properties

Luster

Vitreous
Waxy

Pleochroism

Weak: colorless-(greenish) yellow
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.650-1.6771.612
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
Triclinic Pinacoidal H-M Symbol ( 1) Space Group: P1

Birefringence

0.019-0.025-9999
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Euclase and Faustite Optic Character

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

Similar to their colors, Euclase and Faustite 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.