Quartz and Scheelite Optical Properties

Quartz

Scheelite

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1 Optical Properties

1.1 Luster

Vitreous

Vitreous, Adamantine

1.2 Pleochroism

None

Definite dichoric in yellow (yellow to orange-brown)

1.3 Dispersion

0.010.04

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Translucent, Transparent

1.5 Refractive Index

1.544-1.5531.918-1.936

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

tetragonal

1.8 Birefringence

0.0090.016

0 0.296

1.9 Clarity

Opaque

Translucent

Quartz and Scheelite Optic Character

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

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