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Tortoiseshell
Tortoiseshell

Moonstone
Moonstone



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Tortoiseshell
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Moonstone

Tortoiseshell and Moonstone Optical Properties

Optical Properties

Luster

-
Pearly

Pleochroism

-
-

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

-
Transparent, Transparent to translucent

Refractive Index

1.540-1.5601.518-1.527
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
monoclinic

Birefringence

-99990.006-0.007
0 0.296
👆🏻

Clarity

OpaqueUlrich Henn and Claudio C. Milisenda
Transparent

Tortoiseshell and Moonstone Optic Character

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

Tortoiseshell and Moonstone Transparency

Similar to their colors, Tortoiseshell and Moonstone 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, Tortoiseshell is while Tortoiseshell is in appearance.