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Tigers Eye
Tigers Eye

Tortoiseshell
Tortoiseshell



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Tigers Eye
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Tortoiseshell

Tigers Eye and Tortoiseshell Optical Properties

Optical Properties

Luster

Silky
-

Pleochroism

-
-

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Opaque
-

Refractive Index

1.534-1.5401.540-1.560
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
-

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

-
OpaqueUlrich Henn and Claudio C. Milisenda

Tigers Eye and Tortoiseshell Optic Character

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

Tigers Eye and Tortoiseshell Transparency

Similar to their colors, Tigers Eye 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, Tigers Eye is Opaque while Tigers Eye is Opaque in appearance.