Titanite Sphene and Hematite Optical Properties

Titanite Sphene

Hematite

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1 Optical Properties

1.1 Luster

Not Available

1.2 Pleochroism

Green stones strong trichroism: typically colorless greenish yellow brownish to yellow;

O = brownish red; E = yellowish red

1.3 Dispersion

0.05NA

0.007 1

1.4 Transparency

Transparent, Translucent

OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references

1.5 Refractive Index

1.843-2.1102.690-3.220

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Trigonal

1.8 Birefringence

0.100-0.1920.280

0 0.296

1.9 Clarity

Transparent

OpaqueHerve Nicolas Lazzarelli

Titanite Sphene and Hematite Optic Character

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

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Titanite Sphene and Hematite Transparency

Similar to their colors, Titanite Sphene 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, Titanite Sphene is Translucent and Transparent while Titanite Sphene is Translucent and Transparent in appearance.