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Hematite
Hematite

Peridot
Peridot



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Hematite
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Peridot

Hematite and Peridot Optical Properties

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Optical Properties

Luster

-
Vitreous, Greasy

Pleochroism

O = brownish red; E = yellowish red
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli

Dispersion

0.050.02
0.005 1
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Transparency

OpaqueHerve Nicolas Lazzarelli
Transparent

Refractive Index

2.690-3.2201.64-1.69
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

0.2800.036
0 0.296
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Clarity

OpaqueHerve Nicolas Lazzarelli
Transparent

Hematite and Peridot Optic Character

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

Similar to their colors, Hematite and Peridot 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.