Iolite and Bornite Optical Properties

Iolite

Bornite

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

Vitreous

0.02

Transparent, Translucent, Transparent to translucent

1.52-1.56

Orthorhombic

-9999

Transparent to translucent

Weak

-9999

Orthorhombic

-9999

Iolite and Bornite Optic Character

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

Similar to their colors, Iolite and Bornite 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, Iolite is Transparent, Translucent and Transparent to translucent while Iolite is Transparent, Translucent and Transparent to translucent in appearance.