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Tinzenite
Tinzenite

Bertrandite
Bertrandite



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Tinzenite
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Bertrandite

Tinzenite and Bertrandite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

In thick sections
none.

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

Transparent
TransparentAnthony et al

Refractive Index

1.690-1.7051.583-1.614
1 3.25
👆🏻

Optic Character

-
-

Crystal System

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

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Transparent
TransparentAnthony et al

Tinzenite and Bertrandite Optic Character

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

Tinzenite and Bertrandite Transparency

Similar to their colors, Tinzenite 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, Tinzenite is Transparent while Tinzenite is Transparent in appearance.