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Apophyllite
Apophyllite

Nepheline
Nepheline



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Apophyllite
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Nepheline

Apophyllite and Nepheline Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous, Greasy
1.2 Pleochroism
Dichroic (colorless)
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Transparent, Translucent
1.5 Refractive Index
1.530-1.5431.529-1.547
Agate Opal
1 3.25
1.6 Optic Character
Uniaxial/-
Not Available
1.7 Crystal System
tetragonal
Hexagonal
1.8 Birefringence
0.000-0.0030.003-0.004
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Apophyllite and Nepheline Optic Character

Apophyllite and Nepheline optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Apophyllite and Nepheline 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 Apophyllite and Nepheline 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. Apophyllite has Uniaxial/- character.

Apophyllite and Nepheline Transparency

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