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Euclase and Axinite Optical Properties


Axinite and Euclase Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Weak: colorless-(greenish) yellow   
Strong   

Dispersion
0.02   
23
0.02   
21

Transparency
Gemmological Tables (2004) More from other references   
Gemmological Tables (2004) More from other references   

Refractive Index
1.650-1.677   
1.656-1.704   

Optic Character
Not Available   
Biaxial/+   

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

Birefringence
0.019-0.025   
0.009-0.012   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
TransparentUlrich Henn and Claudio C. Milisenda   

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Euclase and Axinite Optic Character

Euclase and Axinite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Euclase and Axinite 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 Axinite 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. Axinite has Biaxial/+ character.

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Euclase and Axinite Transparency

Similar to their colors, Euclase and Axinite 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.

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