Kornerupine and Onyx Optical Properties

Kornerupine

Onyx

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

X = colorless to green; Y = colorless

Not Available

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Gemmological Tables (2004) More from other references

Translucent, Opaque, Translucent to opaque

1.5 Refractive Index

1.660-1.6851.530-1.543

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Trigonal

1.8 Birefringence

0.012-0.017Not Available

0 0.296

1.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

OpaqueHerve Nicolas Lazzarelli

Kornerupine and Onyx Optic Character

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

Similar to their colors, Kornerupine and Onyx 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, Kornerupine is Gemmological Tables (2004) More from other references while Kornerupine is Gemmological Tables (2004) More from other references in appearance.