Anhydrite and Jet Optical Properties

Anhydrite

Jet

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1 Optical Properties

1.1 Luster

Pearly, Greasy

Waxy

1.2 Pleochroism

For violet varieties

AbsentWalter Schumann

1.3 Dispersion

0.01None

0.007 1

1.4 Transparency

Transparent

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.570-1.6141.640-1.680

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Amorphous

1.8 Birefringence

0.042-0.044Not Available

0 0.296

1.9 Clarity

Transparent

Gemmological Tables (2004) More from other references

Anhydrite and Jet Optic Character

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

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