Cat s Eye and Gahnospinel Optical Properties

Cat s Eye

Gahnospinel

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Not Available

AbsentWalter Schumann

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Translucent

Gemmological Tables (2004)

1.5 Refractive Index

1.744-1.7551.735-1.790

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Isometric

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Translucent

TransparentUlrich Henn and Claudio C. Milisenda

Cat s Eye and Gahnospinel Optic Character

Cat s Eye and Gahnospinel optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Cat s Eye and Gahnospinel 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 Cat s Eye and Gahnospinel 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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Cat s Eye and Gahnospinel Transparency

Similar to their colors, Cat s Eye and Gahnospinel 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, Cat s Eye is Translucent while Cat s Eye is Translucent in appearance.