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Cavansite
Cavansite

Dumortierite
Dumortierite



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Cavansite
X
Dumortierite

Cavansite and Dumortierite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

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

Dispersion

0.040.01
0.005 1
👆🏻

Transparency

-
Translucent, Translucent to opaque

Refractive Index

1.5421.669-1.723
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.0090.011-0.037
0 0.296
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Clarity

-
Translucent

Cavansite and Dumortierite Optic Character

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

Cavansite and Dumortierite Transparency

Similar to their colors, Cavansite 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, Cavansite is while Cavansite is in appearance.