Euclase and Bornite Optical Properties

Euclase

Bornite

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1 Optical Properties

1.1 Luster

Vitreous

Not Available

1.2 Pleochroism

Weak: colorless-(greenish) yellow

Weak

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Gemmological Tables (2004) More from other references

Not Available

1.5 Refractive Index

1.650-1.677Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

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

Orthorhombic

1.8 Birefringence

0.019-0.025Not Available

0 0.296

1.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Not Available

Euclase and Bornite Optic Character

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

Similar to their colors, Euclase and Bornite 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.