Variscite and Jet Optical Properties

Variscite

Jet

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1 Optical Properties

1.1 Luster

Vitreous, Waxy

Waxy

1.2 Pleochroism

MissingWalter Schumann

AbsentWalter Schumann

1.3 Dispersion

NANone

0.007 1

1.4 Transparency

Translucent, Opaque . May be translucent when backlit on the edges.

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.560-1.5941.640-1.680

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Amorphous

1.8 Birefringence

0.031Not Available

0 0.296

1.9 Clarity

Translucent

Gemmological Tables (2004) More from other references

Variscite and Jet Optic Character

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

Similar to their colors, Variscite and Jet 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, Variscite is Opaque . May be translucent when backlit on the edges. and Translucent while Variscite is Opaque . May be translucent when backlit on the edges. and Translucent in appearance.