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Legrandite
Legrandite

Pyrophyllite
Pyrophyllite



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Legrandite
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Pyrophyllite

Legrandite and Pyrophyllite Optical Properties

Optical Properties

Luster

Vitreous
Pearly

Pleochroism

Colorless
-

Dispersion

0.030.05
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.702-1.7401.534-1.601
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.0600.050
0 0.296
👆🏻

Clarity

-
Translucent

Legrandite and Pyrophyllite Optic Character

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

Legrandite and Pyrophyllite Transparency

Similar to their colors, Legrandite and Pyrophyllite 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, Legrandite is while Legrandite is in appearance.