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Nephrite
Nephrite

Actinolite
Actinolite



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Nephrite
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Actinolite

Nephrite and Actinolite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous
1.2 Pleochroism
None
moderate
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
2.5 Transparency
Translucent
TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references
2.6 Refractive Index
1.600-1.6271.613-1.628
Agate Opal
1 3.25
2.10 Optic Character
Not Available
Not Available
2.11 Crystal System
monoclinic
monoclinic
2.12 Birefringence
0.0270.0250-0.0270
Achroite
0 0.296
3.4 Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Nephrite and Actinolite Optic Character

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

Similar to their colors, Nephrite and Actinolite 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.