Hibschite and Hibonite Optical Properties

Hibschite

Hibonite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Not Available

O = brownish gray; E = gray

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Semitransparent

Handbook of mineralogy (2001)

1.5 Refractive Index

Not Available1.79-1.807

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: I a3d

Hexagonal

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

TranslucentAnthony et al

Handbook of mineralogy (2001)

Hibschite and Hibonite Optic Character

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

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Hibschite and Hibonite Transparency

Similar to their colors, Hibschite 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, Hibschite is Semitransparent while Hibschite is Semitransparent in appearance.