Pyrite Marcasite and Euclase Optical Properties

Pyrite Marcasite

Euclase

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1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

Not Available

Weak: colorless-(greenish) yellow

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Opaque

Gemmological Tables (2004) More from other references

1.5 Refractive Index

Not Available1.650-1.677

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Isometric

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

Opaque

TransparentUlrich Henn and Claudio C. Milisenda

Pyrite Marcasite and Euclase Optic Character

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

Similar to their colors, Pyrite Marcasite 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, Pyrite Marcasite is Opaque while Pyrite Marcasite is Opaque in appearance.