Jet and Euclase Optical Properties

Jet

Euclase

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1 Optical Properties

1.1 Luster

Waxy

Vitreous

1.2 Pleochroism

AbsentWalter Schumann

Weak: colorless-(greenish) yellow

1.3 Dispersion

None0.02

0.007 1

1.4 Transparency

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.640-1.6801.650-1.677

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Amorphous

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

1.8 Birefringence

Not Available0.019-0.025

0 0.296

1.9 Clarity

Gemmological Tables (2004) More from other references

TransparentUlrich Henn and Claudio C. Milisenda

Jet and Euclase Optic Character

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

Similar to their colors, Jet 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, Jet is Gemmological Tables (2004) More from other references while Jet is Gemmological Tables (2004) More from other references in appearance.