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Hematite
Hematite

Sylvite
Sylvite



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Hematite
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Sylvite

Hematite and Sylvite Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

O = brownish red; E = yellowish red
Visible in colored crystals

Dispersion

0.050.01
0.005 1
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Transparency

OpaqueHerve Nicolas Lazzarelli
-

Refractive Index

2.690-3.2201.4903
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Isometric

Birefringence

0.280-9999
0 0.296
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Clarity

OpaqueHerve Nicolas Lazzarelli
-

Hematite and Sylvite Optic Character

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

Similar to their colors, Hematite and Sylvite 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.