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Villiaumite and Amblygonite Optical Properties


Amblygonite and Villiaumite Optical Properties


Optical Properties

Luster
Not Available   
Vitreous, Pearly   

Pleochroism
Yellow to pink/deep carmineMichael O’Donoghue   
weak to none   

Dispersion
Not Available   
0.01   
26

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

Refractive Index
1.328-1.332   
1.578-1.646   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Not Available   
Triclinic   

Birefringence
Not Available   
0.020-0.030   

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

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Villiaumite and Amblygonite Optic Character

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

Similar to their colors, Villiaumite 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, Villiaumite is Gemmological Tables (2004) More from other references while Villiaumite is Gemmological Tables (2004) More from other references in appearance.

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