Elbaite and Indicolite Blue Tourmaline Optical Properties

Elbaite

Indicolite Blue Tourmaline

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1 Optical Properties

1.1 Luster

Vitreous

Not Available

1.2 Pleochroism

Pale green

Strong: dark blue light blueWalter Schumann

1.3 Dispersion

0.020.02

0.007 1

1.4 Transparency

Transparent

Transparent, Translucent

1.5 Refractive Index

1.614-1.6661.614-1.666

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Not Available

1.8 Birefringence

0.014-0.0320.014-0.040

0 0.296

1.9 Clarity

Transparent

Elbaite and Indicolite Blue Tourmaline Optic Character

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

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Elbaite and Indicolite Blue Tourmaline Transparency

Similar to their colors, Elbaite 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, Elbaite is Transparent while Elbaite is Transparent in appearance.