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Epidote
Epidote

Prasiolite
Prasiolite



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Epidote
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Prasiolite

Epidote and Prasiolite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous

Pleochroism

Strong
Very weak: light green pale greenWalter Schumann

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.729-1.7681.544-1.553
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Trigonal

Birefringence

0.019-0.0460.009
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Epidote and Prasiolite Optic Character

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

Epidote and Prasiolite Transparency

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