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Hematite
Hematite

Danburite
Danburite



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Hematite
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Danburite

Hematite and Danburite Optical Properties

Optical Properties

Luster

-
Vitreous, Greasy

Pleochroism

O = brownish red; E = yellowish red
Weak: pale yellow yellow

Dispersion

0.050.02
0.005 1
👆🏻

Transparency

OpaqueHerve Nicolas Lazzarelli
-

Refractive Index

2.690-3.2201.627-1.639
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

Trigonal
Orthorhombic

Birefringence

0.2800.006
0 0.296
👆🏻

Clarity

OpaqueHerve Nicolas Lazzarelli
TransparentUlrich Henn and Claudio C. Milisenda

Hematite and Danburite Optic Character

Hematite and Danburite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Hematite and Danburite 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 Danburite 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. Danburite has Biaxial/+ character.

Hematite and Danburite Transparency

Similar to their colors, Hematite and Danburite 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.