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Euclase
Euclase

Pyrite Marcasite
Pyrite Marcasite



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Euclase
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Pyrite Marcasite

Euclase and Pyrite Marcasite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Weak: colorless-(greenish) yellow
Not Available
1.3 Dispersion
Albite Optical ..
0.02
Rank: 23 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Gemmological Tables (2004) More from other references
Opaque
1.5 Refractive Index
1.650-1.677
Not Available
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
Isometric
1.8 Birefringence
0.019-0.025
Not Available
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Opaque

Euclase and Pyrite Marcasite Optic Character

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

Euclase and Pyrite Marcasite Transparency

Similar to their colors, Euclase and Pyrite Marcasite 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, Euclase is Gemmological Tables (2004) More from other references while Euclase is Gemmological Tables (2004) More from other references in appearance.