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Prasiolite
Prasiolite

Axinite
Axinite



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Prasiolite
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Axinite

Prasiolite and Axinite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Very weak: light green pale greenWalter Schumann
Strong

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.544-1.5531.656-1.704
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

Trigonal
Triclinic

Birefringence

0.0090.009-0.012
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Prasiolite and Axinite Optic Character

Prasiolite and Axinite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Prasiolite and Axinite 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 Axinite 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. Axinite has Biaxial/+ character.

Prasiolite and Axinite Transparency

Similar to their colors, Prasiolite and Axinite 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.