Californite and Tanzanite Optical Properties

Californite

Tanzanite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Weak; present colour lighter

Present

1.3 Dispersion

NA0.03

0.007 1

1.4 Transparency

TranslucentWalter Schumann, Gemstones of the world (2001)

Transparent, Translucent, Transparent to translucent

1.5 Refractive Index

1.700-1.7251.685-1.707

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Orthorhombic

1.8 Birefringence

0.001-0.0120.006-0.018

0 0.296

1.9 Clarity

TranslucentWalter Schumann

TransparentUlrich Henn and Claudio C. Milisenda

Californite and Tanzanite Optic Character

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

Similar to their colors, Californite and Tanzanite 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.