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Nuummite
Nuummite

Phlogopite
Phlogopite



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Nuummite
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Phlogopite

Nuummite and Phlogopite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Pearly
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
Not Available
1.5 Refractive Index
1.635-1.6631.530-1.573
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
monoclinic
1.8 Birefringence
0.0170-0.2300.0280-0.0450
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
Not Available

Nuummite and Phlogopite Optic Character

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

Similar to their colors, Nuummite and Phlogopite 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.