Scheelite and Sinhalite Optical Properties

Scheelite

Sinhalite

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1 Optical Properties

1.1 Luster

Vitreous, Adamantine

Not Available

1.2 Pleochroism

Definite dichoric in yellow (yellow to orange-brown)

Trichroism: green light brown dark brownHerve Nicolas Lazzarelli

1.3 Dispersion

0.040.02

0.007 1

1.4 Transparency

Translucent, Transparent

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.918-1.9361.665-1.712

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

Orthorhombic

1.8 Birefringence

0.0160.036-0.042

0 0.296

1.9 Clarity

Translucent

TransparentUlrich Henn and Claudio C. Milisenda

Scheelite and Sinhalite Optic Character

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

Similar to their colors, Scheelite and Sinhalite 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.