Jet and Hureaulite Optical Properties

Jet

Hureaulite

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1 Optical Properties

1.1 Luster

Waxy

Vitreous, Greasy

1.2 Pleochroism

AbsentWalter Schumann

Colorless yellow to pale rose reddish yellow to reddish brown.Anthony et al

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Gemmological Tables (2004) More from other references

Transparent

1.5 Refractive Index

1.640-1.6801.647-1.667

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Amorphous

Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c

1.8 Birefringence

Not Available0.012

0 0.296

1.9 Clarity

Gemmological Tables (2004) More from other references

Transparent

Jet and Hureaulite Optic Character

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

Similar to their colors, Jet and Hureaulite 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, Jet is Gemmological Tables (2004) More from other references while Jet is Gemmological Tables (2004) More from other references in appearance.