Scheelite and Rosasite Optical Properties

Scheelite

Rosasite

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1 Optical Properties

1.1 Luster

Vitreous, Adamantine

Silky, Vitreous

1.2 Pleochroism

Definite dichoric in yellow (yellow to orange-brown)

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

1.3 Dispersion

0.04NA

0.007 1

1.4 Transparency

Translucent, Transparent

Not Available

1.5 Refractive Index

1.918-1.9361.672-1.688

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

monoclinic

1.8 Birefringence

0.0160.139-0.143

0 0.296

1.9 Clarity

Translucent

Not Available

Scheelite and Rosasite Optic Character

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

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