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Prasiolite
Prasiolite

Euclase
Euclase



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Prasiolite
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Euclase

Prasiolite and Euclase Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Very weak: light green pale greenWalter Schumann
Weak: colorless-(greenish) yellow

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.544-1.5531.650-1.677
1 3.25
👆🏻

Optic Character

-
-

Crystal System

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

Birefringence

0.0090.019-0.025
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Prasiolite and Euclase Optic Character

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

Prasiolite and Euclase Transparency

Similar to their colors, Prasiolite 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, Prasiolite is Transparent and Translucent while Prasiolite is Transparent and Translucent in appearance.