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Taaffeite
Taaffeite

Agrellite
Agrellite



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Taaffeite
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Agrellite

Taaffeite and Agrellite Optical Properties

Optical Properties

Luster

Vitreous
Pearly

Pleochroism

Weak
colorless.

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.70-1.731.567
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Triclinic

Birefringence

0.0550.014
0 0.296
👆🏻

Clarity

-
-

Taaffeite and Agrellite Optic Character

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

Similar to their colors, Taaffeite and Agrellite 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.