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Bustamite
Bustamite

Hibonite
Hibonite



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Bustamite and Hibonite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Weak
O = brownish gray; E = gray
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Translucent
Handbook of mineralogy (2001)
1.5 Refractive Index
1.662-1.707
1.79-1.807
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Hexagonal
1.8 Birefringence
0.013-0.015
Not Available
1.9 Clarity
Transparent
Handbook of mineralogy (2001)

Bustamite and Hibonite Optic Character

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

Bustamite and Hibonite Transparency

Similar to their colors, Bustamite and Hibonite 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, Bustamite is Translucent and Transparent while Bustamite is Translucent and Transparent in appearance.