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Hematite
Hematite

Lazulite
Lazulite



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Hematite
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Lazulite

Hematite and Lazulite Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
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O = brownish red; E = yellowish red
0.05
OpaqueHerve Nicolas Lazzarelli
2.690-3.220
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Trigonal
0.280
OpaqueHerve Nicolas Lazzarelli
 
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Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
0.01
Transparent, Translucent
1.604-1.646
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monoclinic
0.031-0.036
Transparent

Hematite and Lazulite Optic Character

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

Hematite and Lazulite Transparency

Similar to their colors, Hematite and Lazulite 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 while Hematite is in appearance.