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Bytownite
Bytownite

Dumortierite
Dumortierite



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Bytownite
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Dumortierite

Bytownite and Dumortierite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous
1.2 Pleochroism
colorless.
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
1.3 Dispersion
0.01None
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Translucent, Translucent to opaque
1.5 Refractive Index
1.561-1.5831.669-1.723
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Orthorhombic
1.8 Birefringence
0.010-0.0110.011-0.037
Achroite
0 0.296
1.9 Clarity
Transparent
Translucent

Bytownite and Dumortierite Optic Character

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

Bytownite and Dumortierite Transparency

Similar to their colors, Bytownite 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, Bytownite is Transparent while Bytownite is Transparent in appearance.