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Hematite
Hematite

Pearl
Pearl



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Hematite
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Pearl

Hematite and Pearl Optical Properties

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Optical Properties

Luster

-
Pearly

Pleochroism

O = brownish red; E = yellowish red
-

Dispersion

0.050.03
0.005 1
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Transparency

OpaqueHerve Nicolas Lazzarelli
Translucent, Opaque

Refractive Index

2.690-3.2201.52-1.66
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

0.2800.156
0 0.296
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Clarity

OpaqueHerve Nicolas Lazzarelli
Translucent

Hematite and Pearl Optic Character

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

Similar to their colors, Hematite and Pearl 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.