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Hematite
Hematite

Andesine
Andesine



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Hematite
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Andesine

Hematite and Andesine Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
O = brownish red; E = yellowish red
colorless.
1.3 Dispersion
NA0.70
Fluorite Optical Properties
0.007 1
1.4 Transparency
OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
2.690-3.2201.543-1.564
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Trigonal
Triclinic
1.8 Birefringence
0.2800.007-0.011
Achroite
0 0.296
1.9 Clarity
OpaqueHerve Nicolas Lazzarelli
Transparent

Hematite and Andesine Optic Character

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

Hematite and Andesine Transparency

Similar to their colors, Hematite and Andesine 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 Blue Chart Gem Identification (2010) More from other references and OpaqueHerve Nicolas Lazzarelli while Hematite is Blue Chart Gem Identification (2010) More from other references and OpaqueHerve Nicolas Lazzarelli in appearance.