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Herderite
Herderite

Taaffeite
Taaffeite



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Herderite
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Taaffeite

Herderite and Taaffeite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
Weak

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.587-1.6421.70-1.73
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

monoclinic
Hexagonal

Birefringence

0.028-0.0320.055
0 0.296
👆🏻

Clarity

Transparent
-

Herderite and Taaffeite Optic Character

Herderite and Taaffeite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Herderite and Taaffeite 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 Herderite and Taaffeite 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. Herderite has Biaxial/+ character.

Herderite and Taaffeite Transparency

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