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Onyx
Onyx

Kornerupine
Kornerupine



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Onyx
X
Kornerupine

Onyx and Kornerupine Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Not Available
X = colorless to green; Y = colorless
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Opaque, Translucent to opaque
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.530-1.5431.660-1.685
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
Not Available0.012-0.017
Achroite
0 0.296
1.9 Clarity
OpaqueHerve Nicolas Lazzarelli
TransparentUlrich Henn and Claudio C. Milisenda

Onyx and Kornerupine Optic Character

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

Onyx and Kornerupine Transparency

Similar to their colors, Onyx and Kornerupine 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, Onyx is Opaque, Translucent and Translucent to opaque while Onyx is Opaque, Translucent and Translucent to opaque in appearance.