Vesuvianite and Pietersite Optical Properties

Vesuvianite

Pietersite

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1 Optical Properties

1.1 Luster

Vitreous, Resinous

Not Available

1.2 Pleochroism

slight in colored varieties

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

1.5 Refractive Index

1.703-1.7521.54-1.56

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

Trigonal

1.8 Birefringence

0.004-0.006Not Available

0 0.296

1.9 Clarity

Not Available

Vesuvianite and Pietersite Optic Character

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

Similar to their colors, Vesuvianite and Pietersite 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.