Chrysoberyl and Axinite Optical Properties

Chrysoberyl

Axinite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

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

Strong

1.3 Dispersion

0.020.02

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.746-1.7631.656-1.704

1 3.25

1.6 Optic Character

Biaxial/+

1.7 Crystal System

Orthorhombic

Triclinic

1.8 Birefringence

0.007-0.0130.009-0.012

0 0.296

1.9 Clarity

Transparent

TransparentUlrich Henn and Claudio C. Milisenda

Chrysoberyl and Axinite Optic Character

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

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Chrysoberyl and Axinite Transparency

Similar to their colors, Chrysoberyl and Axinite 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.