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Hexagonite and Beryllonite Optical Properties


Beryllonite and Hexagonite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Adamantine, Pearly   

Pleochroism
bluish–red   
AbsentWalter Schumann   

Dispersion
Not Available   
0.01   
29

Transparency
Transparent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.599-1.637   
1.552-1.562   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
monoclinic   

Birefringence
0.019-0.028   
0.009   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Hexagonite and Beryllonite Optic Character

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

Similar to their colors, Hexagonite and Beryllonite 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, Hexagonite is Transparent while Hexagonite is Transparent in appearance.

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