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Nickeline and Thulite Optical Properties


Thulite and Nickeline Optical Properties


Optical Properties

Luster
Not Available   
Vitreous   

Pleochroism
Strong (reflected light)   
Present   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.   

Refractive Index
Not Available   
1.695   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Orthorhombic   

Birefringence
Not Available   
0.006-0.018   

Clarity
Not Available   
OpaqueHerve Nicolas Lazzarelli   

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Nickeline and Thulite Optic Character

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

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

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Red Gemstones


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