Vesuvianite and Cassiterite Optical Properties

Vesuvianite

Cassiterite

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1 Optical Properties

1.1 Luster

Vitreous, Resinous

Adamantine, Greasy

1.2 Pleochroism

slight in colored varieties

Pleochroic haloes have been observed. Dichroic in yellow

1.3 Dispersion

NA0.07

0.007 1

1.4 Transparency

Not Available

Transparent, Translucent

1.5 Refractive Index

1.703-1.7521.990-2.105

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

1.8 Birefringence

0.004-0.0060.096-0.098

0 0.296

1.9 Clarity

Not Available

Transparent

Vesuvianite and Cassiterite Optic Character

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

Vesuvianite Vs Amber

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Vesuvianite and Cassiterite Transparency

Similar to their colors, Vesuvianite and Cassiterite 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.