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Vesuvianite
Vesuvianite

Demantoid
Demantoid



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Vesuvianite
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Demantoid

Vesuvianite and Demantoid Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Adamantine

Pleochroism

slight in colored varieties
None

Dispersion

0.030.06
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.703-1.7521.880-1.890
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
cubic

Birefringence

0.004-0.006-9999
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Vesuvianite and Demantoid Optic Character

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

Similar to their colors, Vesuvianite and Demantoid 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.