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Taaffeite
Taaffeite

Nepouite
Nepouite



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Taaffeite
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Nepouite

Taaffeite and Nepouite Optical Properties

Optical Properties

Luster

Vitreous
Waxy, Pearly

Pleochroism

Weak
Weak

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.70-1.731.600-1.630
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Orthorhombic

Birefringence

0.055-9999
0 0.296
👆🏻

Clarity

-
-

Taaffeite and Nepouite Optic Character

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

Similar to their colors, Taaffeite and Nepouite 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.