Hematite and Williamsite Optical Properties

Hematite

Williamsite

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Optical Properties

Luster

Waxy, Silky, Resinous, Greasy

Pleochroism

O = brownish red; E = yellowish red

Dispersion

0.050.03

0.005 1

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Transparency

OpaqueHerve Nicolas Lazzarelli

TranslucentHerve Nicolas Lazzarelli

Refractive Index

2.690-3.2201.530-1.575

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

TranslucentHerve Nicolas Lazzarelli

Hematite and Williamsite Optic Character

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

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Hematite and Williamsite Transparency

Similar to their colors, Hematite and Williamsite 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.