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Pallasite
Pallasite

Tortoiseshell
Tortoiseshell



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Pallasite
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Tortoiseshell

Pallasite and Tortoiseshell Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Not Available
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Gemmological Tables (2004)
1.5 Refractive Index
Not Available1.540-1.560
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Not Available
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Not Available
OpaqueUlrich Henn and Claudio C. Milisenda

Pallasite and Tortoiseshell Optic Character

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

Pallasite and Tortoiseshell Transparency

Similar to their colors, Pallasite 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, Pallasite is Not Available while Pallasite is Not Available in appearance.