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Abalone
Abalone

Bertrandite
Bertrandite



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Abalone
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Bertrandite

Abalone and Bertrandite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
none.

Dispersion

0.540.01
0.005 1
👆🏻

Transparency

-
TransparentAnthony et al

Refractive Index

-99991.583-1.614
1 3.25
👆🏻

Optic Character

-
-

Crystal System

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

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Translucent
TransparentAnthony et al

Abalone and Bertrandite Optic Character

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

Abalone and Bertrandite Transparency

Similar to their colors, Abalone 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, Abalone is while Abalone is in appearance.