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Simpsonite
Simpsonite

Willemite
Willemite



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Simpsonite
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Willemite

Simpsonite and Willemite Optical Properties

Optical Properties

Luster

Adamantine
Vitreous, Resinous

Pleochroism

-
-

Dispersion

0.020.17
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.994-2.0401.687-1.723
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

0.0460.028-0.030
0 0.296
👆🏻

Clarity

-
Transparent

Simpsonite and Willemite Optic Character

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

Simpsonite and Willemite Transparency

Similar to their colors, Simpsonite 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, Simpsonite is while Simpsonite is in appearance.