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Lepidocrocite
Lepidocrocite

Tortoiseshell
Tortoiseshell



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Lepidocrocite
X
Tortoiseshell

Lepidocrocite and Tortoiseshell Optical Properties

Optical Properties

Luster

-
-

Pleochroism

Strong; X = colorless to yellow; Y = orange
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.9401.540-1.560
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

-
OpaqueUlrich Henn and Claudio C. Milisenda

Lepidocrocite and Tortoiseshell Optic Character

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

Lepidocrocite and Tortoiseshell Transparency

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