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Pyromorphite and Almandine Optical Properties


Almandine and Pyromorphite Optical Properties


Optical Properties

Luster
Resinous, Subadamantine   
Greasy, Vitreous   

Pleochroism
Weak   
None   

Dispersion
Not Available   
0.03   
15

Transparency
Transparent   
Gemmological Tables (2004) More from other references   

Refractive Index
2.042-2.059   
1.770-1.820   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
cubic   

Birefringence
0.010   
Not Available   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Pyromorphite and Almandine Optic Character

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

Similar to their colors, Pyromorphite and Almandine 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, Pyromorphite is Transparent while Pyromorphite is Transparent in appearance.

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