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Sphene
Sphene

Gahnite
Gahnite



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Sphene
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Gahnite

Sphene and Gahnite Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.84-2.111.790-1.818
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
cubic
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Color grading system
TransparentUlrich Henn and Claudio C. Milisenda

Sphene and Gahnite Optic Character

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

Sphene and Gahnite Transparency

Similar to their colors, Sphene and Gahnite 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, Sphene is Not Available while Sphene is Not Available in appearance.