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Tortoiseshell
Tortoiseshell

Aragonite
Aragonite



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Tortoiseshell
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Aragonite

Tortoiseshell and Aragonite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous, Resinous
1.2 Pleochroism
Not Available
StrongArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
Transparent, Translucent
1.5 Refractive Index
1.540-1.5601.525-1.686
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic
1.8 Birefringence
Not Available0.155
Achroite
0 0.296
1.9 Clarity
OpaqueUlrich Henn and Claudio C. Milisenda
Transparent

Tortoiseshell and Aragonite Optic Character

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

Similar to their colors, Tortoiseshell and Aragonite 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.