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Nuummite
Nuummite

Bowenite
Bowenite



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Nuummite
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Bowenite

Nuummite and Bowenite Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Waxy, Silky, Resinous, Greasy
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
1.5 Refractive Index
1.635-1.6631.530-1.575
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Not Available
1.8 Birefringence
0.0170-0.230Not Available
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
TranslucentHerve Nicolas Lazzarelli

Nuummite and Bowenite Optic Character

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

Nuummite and Bowenite Transparency

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