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Nepheline
Nepheline

Scheelite
Scheelite



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Nepheline
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Scheelite

Nepheline and Scheelite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous, Adamantine
1.2 Pleochroism
Not Available
Definite dichoric in yellow (yellow to orange-brown)
1.3 Dispersion
NA0.04
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Translucent, Transparent
1.5 Refractive Index
1.529-1.5471.918-1.936
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
tetragonal
1.8 Birefringence
0.003-0.0040.016
Achroite
0 0.296
1.9 Clarity
Transparent
Translucent

Nepheline and Scheelite Optic Character

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

Similar to their colors, Nepheline and Scheelite 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.