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Nepheline
Nepheline

Cat s Eye
Cat s Eye



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Nepheline
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Cat s Eye

Nepheline and Cat s Eye Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Translucent
1.5 Refractive Index
1.529-1.5471.744-1.755
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Orthorhombic
1.8 Birefringence
0.003-0.004Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Translucent

Nepheline and Cat s Eye Optic Character

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

Nepheline and Cat s Eye Transparency

Similar to their colors, Nepheline 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, Nepheline is Translucent and Transparent while Nepheline is Translucent and Transparent in appearance.