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Almandine and Pectolite Optical Properties


Pectolite and Almandine Optical Properties


Optical Properties

Luster
Greasy, Vitreous   
Silky   

Pleochroism
None   
NilArthur Thomas   

Dispersion
0.03   
15
Not Available   

Transparency
Gemmological Tables (2004) More from other references   
Transparent   

Refractive Index
1.770-1.820   
1.595-1.645   

Optic Character
Not Available   
Not Available   

Crystal System
cubic   
Triclinic   

Birefringence
Not Available   
0.028-0.038   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Transparent   

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Almandine and Pectolite Optic Character

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

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

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