Vesuvianite Idocrase and Dumortierite Optical Properties

Vesuvianite Idocrase

Dumortierite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

Not Available

Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue

1.3 Dispersion

0.02None

0.007 1

1.4 Transparency

Transparent

Translucent, Translucent to opaque

1.5 Refractive Index

1.700-1.7251.669-1.723

1 3.25

1.6 Optic Character

Uniaxial/-

Not Available

1.7 Crystal System

Not Available

Orthorhombic

1.8 Birefringence

0.002-0.0120.011-0.037

0 0.296

1.9 Clarity

Transparent

Translucent

Vesuvianite Idocrase and Dumortierite Optic Character

Vesuvianite Idocrase and Dumortierite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Vesuvianite Idocrase and Dumortierite 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 Idocrase and Dumortierite 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 Idocrase has Uniaxial/- character.

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Vesuvianite Idocrase and Dumortierite Transparency

Similar to their colors, Vesuvianite Idocrase and Dumortierite 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 Idocrase is Transparent while Vesuvianite Idocrase is Transparent in appearance.