Eosphorite and Norbergite Optical Properties

Eosphorite

Norbergite

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1 Optical Properties

1.1 Luster

Vitreous, Resinous

Vitreous

1.2 Pleochroism

Visible: X = yellow; Y = pink; Z = pale pink to colorless

Pale yellow very pale yellow colorlessAnthony et al

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

1.5 Refractive Index

1.639-1.6721.563-1.593

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Not Available

1.8 Birefringence

0.029-0.032Not Available

0 0.296

1.9 Clarity

Transparent

Eosphorite and Norbergite Optic Character

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

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Eosphorite and Norbergite Transparency

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