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Verdelite and Hematite Optical Properties


Hematite and Verdelite Optical Properties


Optical Properties

Luster
Not Available   
Not Available   

Pleochroism
Strong: dark green yellow   
O = brownish red; E = yellowish red   

Dispersion
0.02   
22
Not Available   

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

Refractive Index
1.614-1.666   
2.690-3.220   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Trigonal   

Birefringence
0.014-0.040   
0.280   

Clarity
Transparent   
OpaqueHerve Nicolas Lazzarelli   

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Verdelite and Hematite Optic Character

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

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Verdelite and Hematite Transparency

Similar to their colors, Verdelite 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, Verdelite is Translucent and Transparent while Verdelite is Translucent and Transparent in appearance.

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