Friedelite and Scheelite Optical Properties

Friedelite

Scheelite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous, Adamantine

1.2 Pleochroism

NilArthur Thomas

Definite dichoric in yellow (yellow to orange-brown)

1.3 Dispersion

NA0.04

0.007 1

1.4 Transparency

Translucent

Translucent, Transparent

1.5 Refractive Index

1.627-1.6631.918-1.936

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

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

tetragonal

1.8 Birefringence

0.032-0.0350.016

0 0.296

1.9 Clarity

Translucent

Friedelite and Scheelite Optic Character

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

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