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Zinnwaldite
Zinnwaldite

Riebeckite
Riebeckite



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Zinnwaldite
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Riebeckite

Zinnwaldite and Riebeckite Optical Properties

1 Optical Properties
1.1 Luster
Pearly, Vitreous
Vitreous, Silky
1.2 Pleochroism
Distinct
X = blue
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Not Available
1.5 Refractive Index
1.565-1.6251.680-1.698
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
monoclinic
1.8 Birefringence
0.040-0.0500.005-0.008
Achroite
0 0.296
1.9 Clarity
Not Available
Not Available

Zinnwaldite and Riebeckite Optic Character

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

Similar to their colors, Zinnwaldite and Riebeckite 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.