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Norbergite
Norbergite

Eosphorite
Eosphorite



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Norbergite
X
Eosphorite

Norbergite and Eosphorite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Resinous

Pleochroism

Pale yellow very pale yellow colorlessAnthony et al
Visible: X = yellow; Y = pink; Z = pale pink to colorless

Dispersion

0.020.01
0.005 1
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Transparency

Transparent
Transparent

Refractive Index

1.563-1.5931.639-1.672
1 3.25
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Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

-99990.029-0.032
0 0.296
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Clarity

Transparent
Transparent

Norbergite and Eosphorite Optic Character

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

Norbergite and Eosphorite Transparency

Similar to their colors, Norbergite and Eosphorite 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, Norbergite is Transparent while Norbergite is Transparent in appearance.