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Wavellite
Wavellite

Petalite
Petalite



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Wavellite
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Petalite

Wavellite and Petalite Optical Properties

Optical Properties

Luster

Vitreous, Resinous, Pearly
Vitreous, Pearly

Pleochroism

Weak
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.518-1.5611.502-1.523
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.0250.012-0.016
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Wavellite and Petalite Optic Character

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

Wavellite and Petalite Transparency

Similar to their colors, Wavellite and Petalite 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, Wavellite is while Wavellite is in appearance.