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Tortoiseshell
Tortoiseshell

Tugtupite
Tugtupite



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Tortoiseshell
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Tugtupite

Tortoiseshell and Tugtupite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Not Available
1.2 Pleochroism
Not Available
ModerateArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
OpaqueHerve Nicolas Lazzarelli
1.5 Refractive Index
1.540-1.5601.494-1.504
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
tetragonal
1.8 Birefringence
Not Available0.008
Achroite
0 0.296
1.9 Clarity
OpaqueUlrich Henn and Claudio C. Milisenda
OpaqueHerve Nicolas Lazzarelli

Tortoiseshell and Tugtupite Optic Character

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

Similar to their colors, Tortoiseshell and Tugtupite 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 Gemmological Tables (2004) while Tortoiseshell is Gemmological Tables (2004) in appearance.