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Fluorapatite and Nuummite Optical Properties


Nuummite and Fluorapatite Optical Properties


Optical Properties

Luster
Vitreous, Resinous   
Not Available   

Pleochroism
Weak to strong if coloreD   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.631-1.650   
1.635-1.663   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Not Available   

Birefringence
Not Available   
0.0170-0.230   

Clarity
Transparent   
Gemmological Tables (2004) More from other references   

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Fluorapatite and Nuummite Optic Character

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

Similar to their colors, Fluorapatite and Nuummite 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, Fluorapatite is Transparent while Fluorapatite is Transparent in appearance.

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