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Adamite
Adamite

Hibonite
Hibonite



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Adamite
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Hibonite

Adamite and Hibonite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
O = brownish gray; E = gray

Dispersion

0.060.02
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.708-1.7221.79-1.807
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

Orthorhombic
Hexagonal

Birefringence

0.031-0.050-9999
0 0.296
👆🏻

Clarity

Transparent
-

Adamite and Hibonite Optic Character

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

Adamite and Hibonite Transparency

Similar to their colors, Adamite 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, Adamite is Transparent while Adamite is Transparent in appearance.