Norbergite and Peridot Optical Properties

Norbergite

Peridot

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1 Optical Properties

1.1 Luster

Vitreous

Vitreous, Greasy

1.2 Pleochroism

Pale yellow very pale yellow colorlessAnthony et al

Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Transparent

1.5 Refractive Index

1.563-1.5931.64-1.69

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Orthorhombic

1.8 Birefringence

Not Available0.036

0 0.296

1.9 Clarity

Transparent

Norbergite and Peridot Optic Character

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

Similar to their colors, Norbergite and Peridot 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.