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Epidote
Epidote

Forsterite
Forsterite



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Epidote
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Forsterite

Epidote and Forsterite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous

Pleochroism

Strong
colorless.

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.729-1.7681.635-1.671
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.019-0.0460.033-0.042
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Epidote and Forsterite Optic Character

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

Similar to their colors, Epidote and Forsterite 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.