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Andesine and Hematite Optical Properties


Hematite and Andesine Optical Properties


Optical Properties

Luster
Vitreous   
Not Available   

Pleochroism
colorless.   
O = brownish red; E = yellowish red   

Dispersion
0.70   
2
Not Available   

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

Refractive Index
1.543-1.564   
2.690-3.220   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Triclinic   
Trigonal   

Birefringence
0.007-0.011   
0.280   

Clarity
Transparent   
OpaqueHerve Nicolas Lazzarelli   

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Andesine and Hematite Optic Character

Andesine and Hematite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Andesine and Hematite 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 Andesine and Hematite 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. Andesine has Biaxial/+ character.

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Andesine and Hematite Transparency

Similar to their colors, Andesine and Hematite 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, Andesine is Translucent, Transparent and Transparent to translucent while Andesine is Translucent, Transparent and Transparent to translucent in appearance.

Red Gemstones

Red Gemstones


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