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Hematite
Hematite

Omphacite
Omphacite



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Hematite
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Omphacite

Hematite and Omphacite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

O = brownish red; E = yellowish red
Weak: colorless -- very pale green -- very pale green

Dispersion

0.050.02
0.005 1
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Transparency

OpaqueHerve Nicolas Lazzarelli
TranslucentAnthony et al

Refractive Index

2.690-3.2201.662-1.723
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
-

Birefringence

0.280-9999
0 0.296
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Clarity

OpaqueHerve Nicolas Lazzarelli
TranslucentAnthony et al

Hematite and Omphacite Optic Character

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

Similar to their colors, Hematite and Omphacite 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 OpaqueHerve Nicolas Lazzarelli while Hematite is OpaqueHerve Nicolas Lazzarelli in appearance.