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Taaffeite
Taaffeite

Blue John
Blue John



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Taaffeite
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Blue John

Taaffeite and Blue John Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Weak
Not Available
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent
1.5 Refractive Index
1.70-1.731.432-1.436
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Not Available
1.8 Birefringence
0.055Not Available
Achroite
0 0.296
1.9 Clarity
Color grading system
Transparent

Taaffeite and Blue John Optic Character

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

Taaffeite and Blue John Transparency

Similar to their colors, Taaffeite 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, Taaffeite is Gemmological Tables (2004) More from other references while Taaffeite is Gemmological Tables (2004) More from other references in appearance.