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Euclase and Amblygonite Optical Properties


Amblygonite and Euclase Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Pearly   

Pleochroism
Weak: colorless-(greenish) yellow   
weak to none   

Dispersion
0.02   
23
0.01   
26

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

Refractive Index
1.650-1.677   
1.578-1.646   

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   
0.020-0.030   

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

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Euclase and Amblygonite Optic Character

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

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Euclase and Amblygonite Transparency

Similar to their colors, Euclase and Amblygonite 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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