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Moldavite
Moldavite

Willemite
Willemite



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Moldavite
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Willemite

Moldavite and Willemite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Resinous

Pleochroism

Absent
-

Dispersion

0.040.17
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent, Translucent

Refractive Index

1.48-1.541.687-1.723
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

-99990.028-0.030
0 0.296
👆🏻

Clarity

Transparent
Transparent

Moldavite and Willemite Optic Character

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

Moldavite and Willemite Transparency

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