Hurlbutite and Norbergite Optical Properties

Hurlbutite

Norbergite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Not Available

Pale yellow very pale yellow colorlessAnthony et al

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

1.5 Refractive Index

1.595-1.6041.563-1.593

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a

Not Available

1.8 Birefringence

0.009Not Available

0 0.296

1.9 Clarity

Transparent

Hurlbutite and Norbergite Optic Character

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

Similar to their colors, Hurlbutite 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, Hurlbutite is Transparent while Hurlbutite is Transparent in appearance.