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Faustite
Faustite

Euclase
Euclase



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Faustite
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Euclase

Faustite and Euclase Optical Properties

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Optical Properties

Luster

Waxy
Vitreous

Pleochroism

-
Weak: colorless-(greenish) yellow

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.6121.650-1.677
1 3.25
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Optic Character

-
-

Crystal System

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

Birefringence

-99990.019-0.025
0 0.296
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Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Faustite and Euclase Optic Character

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

Faustite and Euclase Transparency

Similar to their colors, Faustite and Euclase 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, Faustite is Translucent while Faustite is Translucent in appearance.