Sphene and Yttrium Aluminium Garnet Optical Properties

Sphene

Yttrium Aluminium Garnet

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1 Optical Properties

1.1 Luster

Not Available

1.2 Pleochroism

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

Gemmological Tables (2004)

1.5 Refractive Index

1.84-2.111.833

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Not Available

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Color grading system

TransparentUlrich Henn and Claudio C. Milisenda

Sphene and Yttrium Aluminium Garnet Optic Character

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

Compare Yellow Gemstones

Sphene Vs Hawks Eye

Sphene Vs Rhyolite

Sphene Vs Heliodor

Sphene and Yttrium Aluminium Garnet Transparency

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