Californite and Covellite Optical Properties

Californite

Covellite

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1 Optical Properties

1.1 Luster

Vitreous

Resinous

1.2 Pleochroism

Weak; present colour lighter

Marked

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TranslucentWalter Schumann, Gemstones of the world (2001)

OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references

1.5 Refractive Index

1.700-1.7251.45-2.62

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Hexagonal

1.8 Birefringence

0.001-0.012Not Available

0 0.296

1.9 Clarity

TranslucentWalter Schumann

OpaqueAnthony et al

Californite and Covellite Optic Character

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

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Californite and Covellite Transparency

Similar to their colors, Californite and Covellite 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.