Vesuvianite and Anhydrite Optical Properties

Vesuvianite

Anhydrite

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1 Optical Properties

1.1 Luster

Vitreous, Resinous

Pearly, Greasy

1.2 Pleochroism

slight in colored varieties

For violet varieties

1.3 Dispersion

NA0.01

0.007 1

1.4 Transparency

Not Available

Transparent

1.5 Refractive Index

1.703-1.7521.570-1.614

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

Orthorhombic

1.8 Birefringence

0.004-0.0060.042-0.044

0 0.296

1.9 Clarity

Not Available

Transparent

Vesuvianite and Anhydrite Optic Character

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

Similar to their colors, Vesuvianite and Anhydrite 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, Vesuvianite is Not Available while Vesuvianite is Not Available in appearance.