Cacoxenite and Tortoiseshell Optical Properties

Cacoxenite

Tortoiseshell

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1 Optical Properties

1.1 Luster

Silky

Not Available

1.2 Pleochroism

visible: O = Pale yellow E = Canary yellow to yellow orange

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

Gemmological Tables (2004)

1.5 Refractive Index

1.575-1.5851.540-1.560

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Hexagonal

Not Available

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Not Available

OpaqueUlrich Henn and Claudio C. Milisenda

Cacoxenite and Tortoiseshell Optic Character

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

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Cacoxenite and Tortoiseshell Transparency

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