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Californite
Californite

Dravite
Dravite



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Californite
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Dravite

Californite and Dravite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak; present colour lighter and darker
Very strong: pale yellow colorless

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

TranslucentWalter Schumann
Transparent

Refractive Index

1.700-1.7251.614-1.666
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

Birefringence

0.001-0.0120.014-0.032
0 0.296
👆🏻

Clarity

TranslucentWalter Schumann
Transparent

Californite and Dravite Optic Character

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

Californite and Dravite Transparency

Similar to their colors, Californite and Dravite 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 TranslucentWalter Schumann while Californite is TranslucentWalter Schumann in appearance.