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Pearl
Pearl

Willemite
Willemite



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Pearl
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Willemite

Pearl and Willemite Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Pearly
-
0.03
Translucent, Opaque
1.52-1.66
-
Orthorhombic
0.156
Translucent
 
Vitreous, Resinous
-
0.17
Transparent, Translucent
1.687-1.723
-
Trigonal
0.028-0.030
Transparent

Pearl and Willemite Optic Character

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

Pearl and Willemite Transparency

Similar to their colors, Pearl and Willemite 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, Pearl is Translucent and Opaque while Pearl is Translucent and Opaque in appearance.