Scheelite and Euclase Optical Properties

Scheelite

Euclase

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1 Optical Properties

1.1 Luster

Vitreous, Adamantine

Vitreous

1.2 Pleochroism

Definite dichoric in yellow (yellow to orange-brown)

Weak: colorless-(greenish) yellow

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

1.918-1.9361.650-1.677

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

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

1.8 Birefringence

0.0160.019-0.025

0 0.296

1.9 Clarity

Translucent

TransparentUlrich Henn and Claudio C. Milisenda

Scheelite and Euclase Optic Character

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

Similar to their colors, Scheelite and Euclase 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.