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Neptunite
Neptunite

Cat s Eye
Cat s Eye



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Neptunite
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Cat s Eye

Neptunite and Cat s Eye Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
x=yellow-orange
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Translucent
1.5 Refractive Index
1.692-1.7341.744-1.755
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Orthorhombic
1.8 Birefringence
0.0294-0.0452Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
Translucent

Neptunite and Cat s Eye Optic Character

Neptunite and Cat s Eye optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Neptunite and Cat s Eye 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 Neptunite and Cat s Eye 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.

Neptunite and Cat s Eye Transparency

Similar to their colors, Neptunite and Cat s Eye 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, Neptunite is Translucent while Neptunite is Translucent in appearance.