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Amblygonite
Amblygonite

Hibonite
Hibonite



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Amblygonite
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Amblygonite and Hibonite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous
1.2 Pleochroism
weak to none
O = brownish gray; E = gray
1.3 Dispersion
Albite Optical ..
0.01
Rank: 26 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Gemmological Tables (2004) More from other references
Handbook of mineralogy (2001)
1.5 Refractive Index
1.578-1.646
1.79-1.807
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Triclinic
Hexagonal
1.8 Birefringence
0.020-0.030
Not Available
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Handbook of mineralogy (2001)

Amblygonite and Hibonite Optic Character

Amblygonite and Hibonite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Amblygonite 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 Amblygonite 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. Amblygonite has Biaxial/+ character.

Amblygonite and Hibonite Transparency

Similar to their colors, Amblygonite 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, Amblygonite is Gemmological Tables (2004) More from other references while Amblygonite is Gemmological Tables (2004) More from other references in appearance.

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