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Nepouite
Nepouite

Black Opal
Black Opal



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Nepouite
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Black Opal

Nepouite and Black Opal Optical Properties

1 Optical Properties
1.1 Luster
Waxy, Pearly
Not Available
1.2 Pleochroism
Weak
AbsentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Transparent, Translucent
1.5 Refractive Index
1.600-1.6301.370-1.470
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Not Available
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Not Available
Transparent

Nepouite and Black Opal Optic Character

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

Nepouite and Black Opal Transparency

Similar to their colors, Nepouite and Black Opal 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, Nepouite is Not Available while Nepouite is Not Available in appearance.