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Californite and Thulite Optical Properties


Thulite and Californite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Weak; present colour lighter   
Present   

Dispersion
Not Available   
Not Available   

Transparency
TranslucentWalter Schumann, Gemstones of the world (2001)   
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.   

Refractive Index
1.700-1.725   
1.695   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Orthorhombic   

Birefringence
0.001-0.012   
0.006-0.018   

Clarity
TranslucentWalter Schumann   
OpaqueHerve Nicolas Lazzarelli   

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Californite and Thulite Optic Character

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

Similar to their colors, Californite and Thulite 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.

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