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Beryllonite
Beryllonite

Nephrite
Nephrite



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Beryllonite
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Nephrite

Beryllonite and Nephrite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Adamantine, Pearly
Vitreous, Greasy
1.2 Pleochroism
AbsentWalter Schumann
None
1.3 Dispersion
0.01NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Translucent
1.5 Refractive Index
1.552-1.5621.600-1.627
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
monoclinic
1.8 Birefringence
0.0090.027
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Beryllonite and Nephrite Optic Character

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

Beryllonite and Nephrite Transparency

Similar to their colors, Beryllonite and Nephrite 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, Beryllonite is Gemmological Tables (2004) More from other references while Beryllonite is Gemmological Tables (2004) More from other references in appearance.