Californite and Howlite Optical Properties

Californite

Howlite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Weak; present colour lighter

NilArthur Thomas

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TranslucentWalter Schumann, Gemstones of the world (2001)

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.700-1.7251.583-1.608

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

monoclinic

1.8 Birefringence

0.001-0.0120.019

0 0.296

1.9 Clarity

TranslucentWalter Schumann

Gemmological Tables (2004) More from other references

Californite and Howlite Optic Character

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

Similar to their colors, Californite and Howlite 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.