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Vesuvianite
Vesuvianite

Demantoid
Demantoid



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Vesuvianite
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Demantoid

Vesuvianite and Demantoid Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Resinous
Adamantine
1.2 Pleochroism
slight in colored varieties
None
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Not Available
Gemmological Tables (2004)
1.5 Refractive Index
1.703-1.752
1.880-1.890
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
cubic
1.8 Birefringence
0.004-0.006
Not Available
1.9 Clarity
Not Available
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 Not Available while Vesuvianite is Not Available in appearance.