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Hematite
Hematite

Alabaster
Alabaster



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Hematite
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Alabaster

Hematite and Alabaster Optical Properties

Optical Properties

Luster

-
-

Pleochroism

O = brownish red; E = yellowish red
-

Dispersion

0.05-
0.005 1
👆🏻

Transparency

OpaqueHerve Nicolas Lazzarelli
Translucent

Refractive Index

2.690-3.2201.520-1.530
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
-

Birefringence

0.2800.010
0 0.296
👆🏻

Clarity

OpaqueHerve Nicolas Lazzarelli
Translucent

Hematite and Alabaster Optic Character

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

Similar to their colors, Hematite and Alabaster 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.