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Nepheline
Nepheline

Epidote
Epidote



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Nepheline
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Epidote

Nepheline and Epidote Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous, Resinous
1.2 Pleochroism
Not Available
Strong
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
0.03
Rank: 14 (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.529-1.547
1.729-1.768
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
monoclinic
1.8 Birefringence
0.003-0.004
0.019-0.046
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Nepheline and Epidote Optic Character

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

Similar to their colors, Nepheline and Epidote 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.