Rubellite and Augite Optical Properties

Rubellite

Augite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous, Resinous

1.2 Pleochroism

Strong: dark red pinkish-redHerve Nicolas Lazzarelli

Pale green

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent, Translucent

1.5 Refractive Index

1.614-1.6661.671-1.774

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

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

1.8 Birefringence

0.014-0.040Not Available

0 0.296

1.9 Clarity

Transparent

Rubellite and Augite Optic Character

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

Similar to their colors, Rubellite 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, Rubellite is Translucent and Transparent while Rubellite is Translucent and Transparent in appearance.