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Sylvite
Sylvite

Hematite
Hematite



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Sylvite
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Hematite

Sylvite and Hematite Optical Properties

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Optical Properties

Luster

Vitreous
-

Pleochroism

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

Dispersion

0.010.05
0.005 1
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Transparency

-
OpaqueHerve Nicolas Lazzarelli

Refractive Index

1.49032.690-3.220
1 3.25
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Optic Character

-
-

Crystal System

Isometric
Trigonal

Birefringence

-99990.280
0 0.296
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Clarity

-
OpaqueHerve Nicolas Lazzarelli

Sylvite and Hematite Optic Character

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

Sylvite and Hematite Transparency

Similar to their colors, Sylvite 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, Sylvite is while Sylvite is in appearance.