Californite and Tortoiseshell Optical Properties

Californite

Tortoiseshell

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1 Optical Properties

1.1 Luster

Vitreous

Not Available

1.2 Pleochroism

Weak; present colour lighter

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TranslucentWalter Schumann, Gemstones of the world (2001)

Gemmological Tables (2004)

1.5 Refractive Index

1.700-1.7251.540-1.560

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

1.8 Birefringence

0.001-0.012Not Available

0 0.296

1.9 Clarity

TranslucentWalter Schumann

OpaqueUlrich Henn and Claudio C. Milisenda

Californite and Tortoiseshell Optic Character

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

Similar to their colors, Californite 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, Californite is Gemstones of the world (2001) and TranslucentWalter Schumann while Californite is Gemstones of the world (2001) and TranslucentWalter Schumann in appearance.