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Euclase and Rossmanite Optical Properties


Rossmanite and Euclase Optical Properties


Optical Properties

Luster
Vitreous   
Not Available   

Pleochroism
Weak: colorless-(greenish) yellow   
Not Available   

Dispersion
0.02   
23
Not Available   

Transparency
Gemmological Tables (2004) More from other references   
TransparentWebmineral.com, Mineralogy Database (2012)   

Refractive Index
1.650-1.677   
1.624-1.645   

Optic Character
Not Available   
Not Available   

Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a   
Not Available   

Birefringence
0.019-0.025   
0.021   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
TransparentWebmineral.com   

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Euclase and Rossmanite Optic Character

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

Similar to their colors, Euclase and Rossmanite 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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