Nickeline and Yttrium Aluminium Garnet Optical Properties

Nickeline

Yttrium Aluminium Garnet

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1 Optical Properties

1.1 Luster

Not Available

1.2 Pleochroism

Strong (reflected light)

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

Gemmological Tables (2004)

1.5 Refractive Index

Not Available1.833

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Hexagonal

Not Available

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Not Available

TransparentUlrich Henn and Claudio C. Milisenda

Nickeline and Yttrium Aluminium Garnet Optic Character

Nickeline and Yttrium Aluminium Garnet optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Nickeline and Yttrium Aluminium Garnet 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 Nickeline and Yttrium Aluminium Garnet 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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Nickeline and Yttrium Aluminium Garnet Transparency

Similar to their colors, Nickeline and Yttrium Aluminium Garnet 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, Nickeline is Not Available while Nickeline is Not Available in appearance.