Norbergite and Andradite Garnet Optical Properties

Norbergite

Andradite Garnet

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1 Optical Properties

1.1 Luster

Vitreous

Adamantine

1.2 Pleochroism

Pale yellow very pale yellow colorlessAnthony et al

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

Transparent, Opaque, Transparent to opaque

1.5 Refractive Index

1.563-1.5931.888-1.889

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Isometric

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Transparent

Transparent to opaque

Norbergite and Andradite Garnet Optic Character

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

Similar to their colors, Norbergite and Andradite Garnet 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.