Kornerupine and Staurolite Optical Properties

Kornerupine

Staurolite

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1 Optical Properties

1.1 Luster

Vitreous

Resinous

1.2 Pleochroism

X = colorless to green; Y = colorless

X = colorless; Y = pale yellow; Z = golden yellow

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Gemmological Tables (2004) More from other references

Blue Chart Gem Identification (2010) More from other references

1.5 Refractive Index

1.660-1.6851.736-1.762

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

monoclinic

1.8 Birefringence

0.012-0.0170.009-0.015

0 0.296

1.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Blue Chart Gem Identification (2010) More from other references

Kornerupine and Staurolite Optic Character

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

Similar to their colors, Kornerupine and Staurolite 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.