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Willemite
Willemite

Ulexite
Ulexite



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Willemite
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Ulexite

Willemite and Ulexite Optical Properties

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Optical Properties

Luster

Vitreous, Resinous
-

Pleochroism

-
-

Dispersion

0.170.06
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent

Refractive Index

1.687-1.7231.491-1.520
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
-

Birefringence

0.028-0.0300.029
0 0.296
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Clarity

Transparent
Transparent

Willemite and Ulexite Optic Character

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

Willemite and Ulexite Transparency

Similar to their colors, Willemite and Ulexite 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, Willemite is Transparent and Translucent while Willemite is Transparent and Translucent in appearance.