Scheelite and Augite Optical Properties

Scheelite

Augite

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1 Optical Properties

1.1 Luster

Vitreous, Adamantine

Vitreous, Resinous

1.2 Pleochroism

Definite dichoric in yellow (yellow to orange-brown)

Pale green

1.3 Dispersion

0.04NA

0.007 1

1.4 Transparency

Translucent, Transparent

Transparent, Translucent

1.5 Refractive Index

1.918-1.9361.671-1.774

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

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

1.8 Birefringence

0.016Not Available

0 0.296

1.9 Clarity

Translucent

Transparent

Scheelite and Augite Optic Character

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

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