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Sylvite
Sylvite

Howlite
Howlite



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Sylvite
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Howlite

Sylvite and Howlite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Visible in colored crystals
NilArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.49031.583-1.608
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Isometric
monoclinic
1.8 Birefringence
Not Available0.019
Achroite
0 0.296
1.9 Clarity
Not Available
Gemmological Tables (2004) More from other references

Sylvite and Howlite Optic Character

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

Sylvite and Howlite Transparency

Similar to their colors, Sylvite 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, Sylvite is Not Available while Sylvite is Not Available in appearance.