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Hematite and Ferro-axinite Axinite-Fe Optical Properties


Ferro-axinite Axinite-Fe and Hematite Optical Properties


Optical Properties

Luster
Not Available   
Vitreous   

Pleochroism
O = brownish red; E = yellowish red   
Colorless   

Dispersion
Not Available   
Not Available   

Transparency
OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references   
Transparent   

Refractive Index
2.690-3.220   
1.674-1.693   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Triclinic Pinacoidal H-M Symbol ( 1) Space Group: P1   

Birefringence
0.280   
Not Available   

Clarity
OpaqueHerve Nicolas Lazzarelli   
Not Available   

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Hematite and Ferro-axinite Axinite-Fe Optic Character

Hematite and Ferro-axinite Axinite-Fe optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Hematite and Ferro-axinite Axinite-Fe 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 Hematite and Ferro-axinite Axinite-Fe 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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Hematite and Ferro-axinite Axinite-Fe Transparency

Similar to their colors, Hematite and Ferro-axinite Axinite-Fe 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, Hematite is Blue Chart Gem Identification (2010) More from other references and OpaqueHerve Nicolas Lazzarelli while Hematite is Blue Chart Gem Identification (2010) More from other references and OpaqueHerve Nicolas Lazzarelli in appearance.

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