Chrysoberyl and Indicolite Blue Tourmaline Optical Properties

Chrysoberyl

Indicolite Blue Tourmaline

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1 Optical Properties

1.1 Luster

Vitreous

Not Available

1.2 Pleochroism

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

Strong: dark blue light blueWalter Schumann

1.3 Dispersion

0.020.02

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Transparent, Translucent

1.5 Refractive Index

1.746-1.7631.614-1.666

1 3.25

1.6 Optic Character

Biaxial/+

Not Available

1.7 Crystal System

Orthorhombic

Not Available

1.8 Birefringence

0.007-0.0130.014-0.040

0 0.296

1.9 Clarity

Transparent

Chrysoberyl and Indicolite Blue Tourmaline Optic Character

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

Similar to their colors, Chrysoberyl and Indicolite Blue Tourmaline 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.