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Garnet
Garnet

Neptunite
Neptunite



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Garnet
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Neptunite

Garnet and Neptunite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Adamantine, Vitreous, Adamantine
Vitreous
1.2 Pleochroism
None
x=yellow-orange
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Transparent to translucent
Translucent
1.5 Refractive Index
1.730-1.8951.692-1.734
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
monoclinic
1.8 Birefringence
Not Available0.0294-0.0452
Achroite
0 0.296
1.9 Clarity
Transparent
Translucent

Garnet and Neptunite Optic Character

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

Garnet and Neptunite Transparency

Similar to their colors, Garnet and Neptunite 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, Garnet is Transparent and Transparent to translucent while Garnet is Transparent and Transparent to translucent in appearance.