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Andesine
Andesine

Hematite
Hematite



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Andesine 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
Albite Optical ..
0.70
Rank: 2 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Translucent, Transparent to translucent
OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
1.5 Refractive Index
1.543-1.564
2.690-3.220
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Triclinic
Trigonal
1.8 Birefringence
0.007-0.011
0.280
1.9 Clarity
Transparent
OpaqueHerve Nicolas Lazzarelli

Andesine and Hematite Optic Character

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

Andesine and Hematite Transparency

Similar to their colors, Andesine 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, Andesine is Translucent, Transparent and Transparent to translucent while Andesine is Translucent, Transparent and Transparent to translucent in appearance.

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