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Howlite
Howlite

Garnet
Garnet



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Howlite
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Garnet

Howlite and Garnet Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous, Adamantine

Pleochroism

-
None

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

-
Transparent, Transparent to translucent

Refractive Index

1.583-1.6081.730-1.895
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Trigonal

Birefringence

0.019-9999
0 0.296
👆🏻

Clarity

-
Transparent

Howlite and Garnet Optic Character

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

Similar to their colors, Howlite and Garnet 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.