Chrysoberyl and Rosasite Optical Properties

Chrysoberyl

Rosasite

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Optical Properties

Luster

Vitreous

Silky, Vitreous

Pleochroism

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

Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue

Dispersion

0.020.03

0.005 1

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Transparency

Transparent, Translucent, Transparent to translucent

Refractive Index

1.746-1.7631.672-1.688

1 3.25

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Optic Character

Biaxial/+

Crystal System

Orthorhombic

monoclinic

Birefringence

0.007-0.0130.139-0.143

0 0.296

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Clarity

Transparent

Chrysoberyl and Rosasite Optic Character

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

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