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Nephrite
Nephrite

Titanite
Titanite



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X
Nephrite
X
Titanite

Nephrite and Titanite Optical Properties

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Optical Properties

Luster

Vitreous, Greasy
Subadamantine, Resinous

Pleochroism

None
Strong: X = nearly colorless; Y = yellow to green; Z = red to yellow-orange

Dispersion

0.010.05
0.005 1
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Transparency

Translucent
-

Refractive Index

1.600-1.6271.885-1.990
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
monoclinic

Birefringence

0.0270.105-0.135
0 0.296
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Clarity

Translucent
-

Nephrite and Titanite Optic Character

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

Nephrite and Titanite Transparency

Similar to their colors, Nephrite and Titanite 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, Nephrite is Translucent while Nephrite is Translucent in appearance.