×

Taaffeite
Taaffeite

Bertrandite
Bertrandite



ADD
Compare
X
Taaffeite
X
Bertrandite

Taaffeite and Bertrandite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak
none.

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
TransparentAnthony et al

Refractive Index

1.70-1.731.583-1.614
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21

Birefringence

0.055-9999
0 0.296
👆🏻

Clarity

-
TransparentAnthony et al

Taaffeite and Bertrandite Optic Character

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

Similar to their colors, Taaffeite and Bertrandite 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.