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Narsarsukite
Narsarsukite

Allanite
Allanite



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Narsarsukite
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Allanite

Narsarsukite and Allanite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Not Available
1.2 Pleochroism
Weak; O = colorless to yellow; E = colorless to honey-yellow
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Not Available
1.5 Refractive Index
1.610-1.6471
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
Not Available
1.8 Birefringence
0.0210.013-0.036
Achroite
0 0.296
1.9 Clarity
Transparent
Not Available

Narsarsukite and Allanite Optic Character

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

Narsarsukite and Allanite Transparency

Similar to their colors, Narsarsukite and Allanite 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, Narsarsukite is Translucent and Transparent while Narsarsukite is Translucent and Transparent in appearance.