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Ivory
Ivory

Willemite
Willemite



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Ivory
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Willemite

Ivory and Willemite Optical Properties

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Optical Properties

Luster

-
Vitreous, Resinous

Pleochroism

-
-

Dispersion

-0.17
0.005 1
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Transparency

Translucent
Transparent, Translucent

Refractive Index

1.535-1.5701.687-1.723
1 3.25
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Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

-99990.028-0.030
0 0.296
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Clarity

Translucent
Transparent

Ivory and Willemite Optic Character

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

Ivory and Willemite Transparency

Similar to their colors, Ivory 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, Ivory is Translucent while Ivory is Translucent in appearance.