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Howlite
Howlite

Spodumene
Spodumene



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Howlite
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Spodumene

Howlite and Spodumene Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
NilArthur Thomas
Strong in kunzite: α-purple
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent
1.5 Refractive Index
1.583-1.6081.657-1.681
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
monoclinic
1.8 Birefringence
0.0190.014-0.018
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
Gems

Howlite and Spodumene Optic Character

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

Similar to their colors, Howlite and Spodumene 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.