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Austinite
Austinite

Dumortierite
Dumortierite



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Austinite
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Dumortierite

Austinite and Dumortierite Optical Properties

1 Optical Properties
1.1 Luster
Subadamantine, Silky, Fibrous
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
Albite Optical ..
Not Available
Rank: N/A (Overall)
None
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Not Available
Translucent, Translucent to opaque
1.5 Refractive Index
1.759
1.669-1.723
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Orthorhombic
1.8 Birefringence
0.024
0.011-0.037
1.9 Clarity
Not Available
Translucent

Austinite and Dumortierite Optic Character

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

Austinite and Dumortierite Transparency

Similar to their colors, Austinite 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, Austinite is Not Available while Austinite is Not Available in appearance.