Kornerupine and Foitite Optical Properties

Kornerupine

Foitite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

X = colorless to green; Y = colorless

Strong: pale lavender dark blueAnthony et al

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Gemmological Tables (2004) More from other references

TranslucentAnthony et al, Translucent

1.5 Refractive Index

1.660-1.685Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

1.8 Birefringence

0.012-0.017Not Available

0 0.296

1.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

TranslucentAnthony et al

Kornerupine and Foitite Optic Character

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

Similar to their colors, Kornerupine and Foitite 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.