Hurlbutite and Scheelite Optical Properties

Hurlbutite

Scheelite

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1 Optical Properties

1.1 Luster

Vitreous

Vitreous, Adamantine

1.2 Pleochroism

Not Available

Definite dichoric in yellow (yellow to orange-brown)

1.3 Dispersion

NA0.04

0.007 1

1.4 Transparency

Transparent

Translucent, Transparent

1.5 Refractive Index

1.595-1.6041.918-1.936

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a

tetragonal

1.8 Birefringence

0.0090.016

0 0.296

1.9 Clarity

Transparent

Translucent

Hurlbutite and Scheelite Optic Character

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

Similar to their colors, Hurlbutite 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, Hurlbutite is Transparent while Hurlbutite is Transparent in appearance.