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Gedrite
Gedrite

Willemite
Willemite



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Gedrite
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Willemite

Gedrite and Willemite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous, Resinous

Pleochroism

Weak to moderate
-

Dispersion

0.020.17
0.005 1
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Transparency

Transparent
Transparent, Translucent

Refractive Index

1.625-1.7181.687-1.723
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Trigonal

Birefringence

-99990.028-0.030
0 0.296
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Clarity

Transparent
Transparent

Gedrite and Willemite Optic Character

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

Gedrite and Willemite Transparency

Similar to their colors, Gedrite 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, Gedrite is Transparent while Gedrite is Transparent in appearance.