Hurlbutite and Variscite Optical Properties

Hurlbutite

Variscite

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1 Optical Properties

1.1 Luster

Vitreous

Vitreous, Waxy

1.2 Pleochroism

Not Available

MissingWalter Schumann

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

Translucent, Opaque . May be translucent when backlit on the edges.

1.5 Refractive Index

1.595-1.6041.560-1.594

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

Orthorhombic

1.8 Birefringence

0.0090.031

0 0.296

1.9 Clarity

Transparent

Translucent

Hurlbutite and Variscite Optic Character

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

Similar to their colors, Hurlbutite and Variscite 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.