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Prasiolite
Prasiolite

Gedrite
Gedrite



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Prasiolite
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Gedrite

Prasiolite and Gedrite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Very weak: light green pale greenWalter Schumann
Weak to moderate

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent

Refractive Index

1.544-1.5531.625-1.718
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma

Birefringence

0.009-9999
0 0.296
👆🏻

Clarity

Transparent
Transparent

Prasiolite and Gedrite Optic Character

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

Prasiolite and Gedrite Transparency

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