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Taaffeite
Taaffeite

Phosphosiderite
Phosphosiderite



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Taaffeite
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Phosphosiderite

Taaffeite and Phosphosiderite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Weak
Pale rose-red carmine-red colorlessAnthony et al
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
1.70-1.731.692-1.739
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Not Available
1.8 Birefringence
0.0550.240
Achroite
0 0.296
1.9 Clarity
Color grading system
Transparent

Taaffeite and Phosphosiderite Optic Character

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

Similar to their colors, Taaffeite and Phosphosiderite 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.