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Prase
Prase

Gedrite
Gedrite



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Prase
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Gedrite

Prase and Gedrite Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

-
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

-
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

Prase and Gedrite Optic Character

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

Prase and Gedrite Transparency

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