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Tortoiseshell
Tortoiseshell

Beudantite
Beudantite



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Tortoiseshell
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Beudantite

Tortoiseshell and Beudantite Optical Properties

Optical Properties

Luster

-
Vitreous, Resinous

Pleochroism

-
visible

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.540-1.5601.957
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

-99990.014
0 0.296
👆🏻

Clarity

OpaqueUlrich Henn and Claudio C. Milisenda
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Tortoiseshell and Beudantite Optic Character

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

Similar to their colors, Tortoiseshell and Beudantite 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.