Augite and Friedelite Optical Properties

Augite

Friedelite

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1 Optical Properties

1.1 Luster

Vitreous, Resinous

Not Available

1.2 Pleochroism

Pale green

NilArthur Thomas

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent, Translucent

Translucent

1.5 Refractive Index

1.671-1.7741.627-1.663

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

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

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

1.8 Birefringence

Not Available0.032-0.035

0 0.296

1.9 Clarity

Transparent

Translucent

Augite and Friedelite Optic Character

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

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