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Piemontite and Ludlamite Optical Properties


Ludlamite and Piemontite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Pearly   

Pleochroism
visible   
NilArthur Thomas   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Gemmological Tables (2004) More from other references   

Refractive Index
1.725-1.756   
1.653-1.693   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
monoclinic   

Birefringence
0.025-0.076   
0.038-0.044   

Clarity
Not Available   
TransparentUlrich Henn and Claudio C. Milisenda   

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Piemontite and Ludlamite Optic Character

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

Similar to their colors, Piemontite and Ludlamite 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, Piemontite is Not Available while Piemontite is Not Available in appearance.

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