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Pearl
Pearl

Hibonite
Hibonite



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Pearl and Hibonite Optical Properties

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1 Optical Properties
1.1 Luster
Pearly
Vitreous
1.2 Pleochroism
AbsentWalter Schumann
O = brownish gray; E = gray
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Opaque
Handbook of mineralogy (2001)
1.5 Refractive Index
1.52-1.661.79-1.807
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Hexagonal
1.8 Birefringence
0.156Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
Handbook of mineralogy (2001)

Pearl and Hibonite Optic Character

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

Pearl and Hibonite Transparency

Similar to their colors, Pearl 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, Pearl is Opaque and Translucent while Pearl is Opaque and Translucent in appearance.