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Amazonite
Amazonite

Howlite
Howlite



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Amazonite
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Howlite

Amazonite and Howlite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
WeakMichael O’Donoghue
NilArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Translucent to opaque
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.522-1.5301.583-1.608
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
monoclinic
1.8 Birefringence
0.008-0.0100.019
Achroite
0 0.296
1.9 Clarity
Translucent
Gemmological Tables (2004) More from other references

Amazonite and Howlite Optic Character

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

Amazonite and Howlite Transparency

Similar to their colors, Amazonite 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, Amazonite is Translucent and Translucent to opaque while Amazonite is Translucent and Translucent to opaque in appearance.