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Sogdianite
Sogdianite

Hematite
Hematite



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Sogdianite and Hematite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Not Available
1.2 Pleochroism
Not Available
O = brownish red; E = yellowish red
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Gemmological Tables (2004) More from other references
OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
1.5 Refractive Index
1.606-1.608
2.690-3.220
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Trigonal
1.8 Birefringence
0.002
0.280
1.9 Clarity
OpaqueUlrich Henn and Claudio C. Milisenda
OpaqueHerve Nicolas Lazzarelli

Sogdianite and Hematite Optic Character

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

Sogdianite and Hematite Transparency

Similar to their colors, Sogdianite 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, Sogdianite is Gemmological Tables (2004) More from other references while Sogdianite is Gemmological Tables (2004) More from other references in appearance.