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Taaffeite
Taaffeite

Zinnwaldite
Zinnwaldite



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Taaffeite
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Zinnwaldite

Taaffeite and Zinnwaldite Optical Properties

Optical Properties

Luster

Vitreous
Pearly, Vitreous

Pleochroism

Weak
Distinct

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.70-1.731.565-1.625
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
monoclinic

Birefringence

0.0550.040-0.050
0 0.296
👆🏻

Clarity

-
-

Taaffeite and Zinnwaldite Optic Character

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

Taaffeite and Zinnwaldite Transparency

Similar to their colors, Taaffeite and Zinnwaldite 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, Taaffeite is while Taaffeite is in appearance.