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Idocrase
Idocrase

Tortoiseshell
Tortoiseshell



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Idocrase
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Tortoiseshell

Idocrase 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
1.67-1.761.540-1.560
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
Not Available
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Color grading system
OpaqueUlrich Henn and Claudio C. Milisenda

Idocrase and Tortoiseshell Optic Character

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

Idocrase and Tortoiseshell Transparency

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