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Unakite
Unakite

Hematite
Hematite



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Unakite
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Hematite

Unakite and Hematite Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Not Available
1.2 Pleochroism
Not Available
O = brownish red; E = yellowish red
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemstones of the world (2001)
OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
1.5 Refractive Index
1.5252.690-3.220
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Trigonal
1.8 Birefringence
Not Available0.280
Achroite
0 0.296
1.9 Clarity
Gemstones of the world (2001)
OpaqueHerve Nicolas Lazzarelli

Unakite and Hematite Optic Character

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

Unakite and Hematite Transparency

Similar to their colors, Unakite 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, Unakite is Gemstones of the world (2001) while Unakite is Gemstones of the world (2001) in appearance.