Home
Gemstones


Hibonite and Dumortierite Optical Properties


Dumortierite and Hibonite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
O = brownish gray; E = gray   
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue   

Dispersion
Not Available   
None   

Transparency
Handbook of mineralogy (2001)   
Translucent, Translucent to opaque   

Refractive Index
1.79-1.807   
1.669-1.723   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Orthorhombic   

Birefringence
Not Available   
0.011-0.037   

Clarity
Handbook of mineralogy (2001)   
Translucent   

Benefits >>
<< Physical Properties

Hibonite and Dumortierite Optic Character

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

Compare Blue Gemstones

Hibonite and Dumortierite Transparency

Similar to their colors, Hibonite 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, Hibonite is Handbook of mineralogy (2001) while Hibonite is Handbook of mineralogy (2001) in appearance.

Blue Gemstones

Blue Gemstones


Compare Blue Gemstones