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Prehnite
Prehnite

Lepidocrocite
Lepidocrocite



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X
Prehnite
X
Lepidocrocite

Prehnite and Lepidocrocite Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

-
Strong; X = colorless to yellow; Y = orange

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.611-1.6731.940
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.021-0.033-9999
0 0.296
👆🏻

Clarity

TranslucentHerve Nicolas Lazzarelli
-

Prehnite and Lepidocrocite Optic Character

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

Prehnite and Lepidocrocite Transparency

Similar to their colors, Prehnite and Lepidocrocite 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, Prehnite is Translucent while Prehnite is Translucent in appearance.