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Barite
Barite

Hematite
Hematite



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Barite
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Hematite

Barite and Hematite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
colorless.
O = brownish red; E = yellowish red
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
1.5 Refractive Index
Not Available2.690-3.220
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Trigonal
1.8 Birefringence
Not Available0.280
Achroite
0 0.296
1.9 Clarity
Not Available
OpaqueHerve Nicolas Lazzarelli

Barite and Hematite Optic Character

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

Barite and Hematite Transparency

Similar to their colors, Barite and Hematite 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, Barite is Not Available while Barite is Not Available in appearance.