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Pyrope Almandine and Dumortierite Optical Properties


Dumortierite and Pyrope Almandine Optical Properties


Optical Properties

Luster
Not Available   
Vitreous   

Pleochroism
AbsentWalter Schumann   
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue   

Dispersion
0.02   
16
None   

Transparency
TransparentGemdat.org, Management Team (2012)   
Translucent, Translucent to opaque   

Refractive Index
1.73-1.77   
1.669-1.723   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Orthorhombic   

Birefringence
Not Available   
0.011-0.037   

Clarity
TransparentGemdat.org   
Translucent   

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Pyrope Almandine and Dumortierite Optic Character

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

Similar to their colors, Pyrope Almandine and Dumortierite 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, Pyrope Almandine is Management Team (2012) and TransparentGemdat.org while Pyrope Almandine is Management Team (2012) and TransparentGemdat.org in appearance.

Red Gemstones

Red Gemstones


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