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Albite
Albite

Tortoiseshell
Tortoiseshell



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Albite
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Tortoiseshell

Albite and Tortoiseshell Optical Properties

Optical Properties

Luster

Vitreous, Pearly
-

Pleochroism

colorless.
-

Dispersion

1.000.01
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.525-1.5421.540-1.560
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
-

Birefringence

0.008-0.011-9999
0 0.296
👆🏻

Clarity

Transparent
OpaqueUlrich Henn and Claudio C. Milisenda

Albite and Tortoiseshell Optic Character

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

Albite and Tortoiseshell Transparency

Similar to their colors, Albite and Tortoiseshell 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, Albite is Transparent and Translucent while Albite is Transparent and Translucent in appearance.