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Erythrite and Nickeline Optical Properties


Nickeline and Erythrite Optical Properties


Optical Properties

Luster
Subadamantine, Pearly   
Not Available   

Pleochroism
Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red   
Strong (reflected light)   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Not Available   

Refractive Index
1.626-1.629   
Not Available   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Hexagonal   

Birefringence
Not Available   
Not Available   

Clarity
Not Available   
Not Available   

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Erythrite and Nickeline Optic Character

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

Similar to their colors, Erythrite and Nickeline 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, Erythrite is Not Available while Erythrite is Not Available in appearance.

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Red Gemstones


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