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Zinnwaldite
Zinnwaldite

Spinel
Spinel



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Zinnwaldite
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Spinel

Zinnwaldite and Spinel Optical Properties

1 Optical Properties
1.1 Luster
Pearly, Vitreous
Vitreous
1.2 Pleochroism
Distinct
Absent
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
0.02
Rank: 18 (Overall)
Fluorite Optical Properties
1.4 Transparency
Not Available
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
1.565-1.625
1.73
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Isometric
1.8 Birefringence
0.040-0.050
Not Available
1.9 Clarity
Not Available
TransparentUlrich Henn and Claudio C. Milisenda

Zinnwaldite and Spinel Optic Character

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

Zinnwaldite and Spinel Transparency

Similar to their colors, Zinnwaldite and Spinel 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, Zinnwaldite is Not Available while Zinnwaldite is Not Available in appearance.