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Nepheline
Nepheline

Bronzite
Bronzite



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Nepheline
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Bronzite

Nepheline and Bronzite Optical Properties

Optical Properties

Luster

Vitreous, Greasy
-

Pleochroism

-
-

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent, Translucent

Refractive Index

1.529-1.5471.668
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Orthorhombic

Birefringence

0.003-0.0040.014
0 0.296
👆🏻

Clarity

Transparent
Transparent

Nepheline and Bronzite Optic Character

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

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