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Howlite
Howlite

Tigers Eye
Tigers Eye



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Howlite
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Tigers Eye

Howlite and Tigers Eye Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Silky
1.2 Pleochroism
NilArthur Thomas
Not Available
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Opaque
1.5 Refractive Index
1.583-1.6081.534-1.540
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Trigonal
1.8 Birefringence
0.019Not Available
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
Gemstones of the world (2001) More from other references

Howlite and Tigers Eye Optic Character

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

Similar to their colors, Howlite and Tigers Eye 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 Gemmological Tables (2004) More from other references while Howlite is Gemmological Tables (2004) More from other references in appearance.