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Villiaumite and Pleonaste Optical Properties


Pleonaste and Villiaumite Optical Properties


Optical Properties

Luster
Not Available   
Not Available   

Pleochroism
Yellow to pink/deep carmineMichael O’Donoghue   
Not Available   

Dispersion
Not Available   
Not Available   

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

Refractive Index
1.328-1.332   
1.780   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Not Available   

Birefringence
Not Available   
Not Available   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Gemmological Tables (2004)   

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Villiaumite and Pleonaste Optic Character

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

Similar to their colors, Villiaumite and Pleonaste 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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