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Dumortierite
Dumortierite

Chrysoberyl
Chrysoberyl



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Dumortierite
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Chrysoberyl

Dumortierite and Chrysoberyl Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
X = red; Y = yellow-orange; Z = emerald-green
1.3 Dispersion
None0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Translucent to opaque
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
1.669-1.7231.746-1.763
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Orthorhombic
Orthorhombic
1.8 Birefringence
0.011-0.0370.007-0.013
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Dumortierite and Chrysoberyl Optic Character

Dumortierite and Chrysoberyl optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Dumortierite and Chrysoberyl 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 Dumortierite and Chrysoberyl 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. Chrysoberyl has Biaxial/+ character.

Dumortierite and Chrysoberyl Transparency

Similar to their colors, Dumortierite and Chrysoberyl 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, Dumortierite is Translucent and Translucent to opaque while Dumortierite is Translucent and Translucent to opaque in appearance.