Variscite and Rosasite Optical Properties

Variscite

Rosasite

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1 Optical Properties

1.1 Luster

Vitreous, Waxy

Silky, Vitreous

1.2 Pleochroism

MissingWalter Schumann

Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

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

Not Available

1.5 Refractive Index

1.560-1.5941.672-1.688

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

monoclinic

1.8 Birefringence

0.0310.139-0.143

0 0.296

1.9 Clarity

Translucent

Not Available

Variscite and Rosasite Optic Character

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

Similar to their colors, Variscite and Rosasite 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, Variscite is Opaque . May be translucent when backlit on the edges. and Translucent while Variscite is Opaque . May be translucent when backlit on the edges. and Translucent in appearance.