Cacoxenite and Gahnospinel Optical Properties

Cacoxenite

Gahnospinel

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1 Optical Properties

1.1 Luster

Silky

Vitreous

1.2 Pleochroism

visible: O = Pale yellow E = Canary yellow to yellow orange

AbsentWalter Schumann

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

Gemmological Tables (2004)

1.5 Refractive Index

1.575-1.5851.735-1.790

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Hexagonal

Isometric

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Not Available

TransparentUlrich Henn and Claudio C. Milisenda

Cacoxenite and Gahnospinel Optic Character

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

Similar to their colors, Cacoxenite 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, Cacoxenite is Not Available while Cacoxenite is Not Available in appearance.