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Nephrite
Nephrite

Watermelon Tourmaline
Watermelon Tourmaline



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Nephrite
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Watermelon Tourmaline

Nephrite and Watermelon Tourmaline Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous
1.2 Pleochroism
None
Not Available
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
TransparentGemdat.org, Management Team (2012)
1.5 Refractive Index
1.600-1.6271.614-1.666
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Not Available
1.8 Birefringence
0.0270.014-0.040
Achroite
0 0.296
1.9 Clarity
Translucent
TransparentGemdat.org

Nephrite and Watermelon Tourmaline Optic Character

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

Similar to their colors, Nephrite and Watermelon Tourmaline 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.