Chrysoberyl and Hexagonite Optical Properties

Chrysoberyl

Hexagonite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

X = red; Y = yellow-orange; Z = emerald-green

bluish–red

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Transparent

1.5 Refractive Index

1.746-1.7631.599-1.637

1 3.25

1.6 Optic Character

Biaxial/+

Not Available

1.7 Crystal System

Orthorhombic

Not Available

1.8 Birefringence

0.007-0.0130.019-0.028

0 0.296

1.9 Clarity

Transparent

Chrysoberyl and Hexagonite Optic Character

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

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Chrysoberyl and Hexagonite Transparency

Similar to their colors, Chrysoberyl and Hexagonite 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, Chrysoberyl is Translucent, Transparent and Transparent to translucent while Chrysoberyl is Translucent, Transparent and Transparent to translucent in appearance.