Chrysoberyl and Liddicoatite Optical Properties

Chrysoberyl

Liddicoatite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

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

Strong: dark brown light brownAnthony et al

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Transparent

1.5 Refractive Index

1.746-1.763Not Available

1 3.25

1.6 Optic Character

Biaxial/+

Not Available

1.7 Crystal System

Orthorhombic

Not Available

1.8 Birefringence

0.007-0.013Not Available

0 0.296

1.9 Clarity

Transparent

Chrysoberyl and Liddicoatite Optic Character

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

Similar to their colors, Chrysoberyl and Liddicoatite 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.