Riebeckite and Augite Optical Properties

Riebeckite

Augite

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1 Optical Properties

1.1 Luster

Vitreous, Silky

Vitreous, Resinous

1.2 Pleochroism

X = blue

Pale green

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

Transparent, Translucent

1.5 Refractive Index

1.680-1.6981.671-1.774

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c

1.8 Birefringence

0.005-0.008Not Available

0 0.296

1.9 Clarity

Not Available

Transparent

Riebeckite and Augite Optic Character

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

Similar to their colors, Riebeckite and Augite 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, Riebeckite is Not Available while Riebeckite is Not Available in appearance.