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Aragonite and Grandidierite Optical Properties


Grandidierite and Aragonite Optical Properties


Optical Properties

Luster
Vitreous, Resinous   
Vitreous, Pearly   

Pleochroism
StrongArthur Thomas   
visible   

Dispersion
Not Available   
Not Available   

Transparency
Transparent, Translucent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.525-1.686   
1.578-1.639   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
Orthorhombic   

Birefringence
0.155   
0.037-0.039   

Clarity
Transparent   
Gemmological Tables (2004) More from other references   

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Aragonite and Grandidierite Optic Character

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

Similar to their colors, Aragonite and Grandidierite 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, Aragonite is Translucent and Transparent while Aragonite is Translucent and Transparent in appearance.

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