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Hematite
Hematite

Fluorapatite
Fluorapatite



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Hematite
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Fluorapatite

Hematite and Fluorapatite Optical Properties

Optical Properties

Luster

-
Vitreous, Resinous

Pleochroism

O = brownish red; E = yellowish red
Weak to strong if coloreD

Dispersion

0.050.03
0.005 1
👆🏻

Transparency

OpaqueHerve Nicolas Lazzarelli
Transparent

Refractive Index

2.690-3.2201.631-1.650
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Hexagonal

Birefringence

0.280-9999
0 0.296
👆🏻

Clarity

OpaqueHerve Nicolas Lazzarelli
Transparent

Hematite and Fluorapatite Optic Character

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

Similar to their colors, Hematite and Fluorapatite 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.