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Zinnwaldite
Zinnwaldite

Blue John
Blue John



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Zinnwaldite
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Blue John

Zinnwaldite and Blue John Optical Properties

1 Optical Properties
1.1 Luster
Pearly, Vitreous
Not Available
1.2 Pleochroism
Distinct
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Transparent
1.5 Refractive Index
1.565-1.6251.432-1.436
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Not Available
1.8 Birefringence
0.040-0.050Not Available
Achroite
0 0.296
1.9 Clarity
Not Available
Transparent

Zinnwaldite and Blue John Optic Character

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

Similar to their colors, Zinnwaldite and Blue John 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.