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Vesuvianite
Vesuvianite

Phosphosiderite
Phosphosiderite



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Vesuvianite
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Phosphosiderite

Vesuvianite and Phosphosiderite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous

Pleochroism

slight in colored varieties
Pale rose-red carmine-red colorlessAnthony et al

Dispersion

0.030.04
0.005 1
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Transparency

-
Transparent

Refractive Index

1.703-1.7521.692-1.739
1 3.25
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Optic Character

-
-

Crystal System

tetragonal
-

Birefringence

0.004-0.0060.240
0 0.296
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Clarity

-
Transparent

Vesuvianite and Phosphosiderite Optic Character

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

Vesuvianite and Phosphosiderite Transparency

Similar to their colors, Vesuvianite and Phosphosiderite 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 while Vesuvianite is in appearance.