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Howlite
Howlite

Hiddenite
Hiddenite



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Howlite
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Hiddenite

Howlite and Hiddenite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
Distinct trichroism: yellow green green blue greenHerve Nicolas Lazzarelli

Dispersion

0.010.02
0.005 1
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Transparency

-
Transparent

Refractive Index

1.583-1.6081.657-1.681
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
monoclinic

Birefringence

0.0190.014-0.016
0 0.296
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Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Howlite and Hiddenite Optic Character

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

Howlite and Hiddenite Transparency

Similar to their colors, Howlite and Hiddenite 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, Howlite is while Howlite is in appearance.