Vesuvianite and Rosasite Optical Properties

Vesuvianite

Rosasite

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1 Optical Properties

1.1 Luster

Vitreous, Resinous

Silky, Vitreous

1.2 Pleochroism

slight in colored varieties

Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

1.5 Refractive Index

1.703-1.7521.672-1.688

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

monoclinic

1.8 Birefringence

0.004-0.0060.139-0.143

0 0.296

1.9 Clarity

Not Available

Vesuvianite and Rosasite Optic Character

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

Similar to their colors, Vesuvianite and Rosasite 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.