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Phosphosiderite
Phosphosiderite

Augelite
Augelite



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Phosphosiderite and Augelite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Pearly
1.2 Pleochroism
Pale rose-red carmine-red colorlessAnthony et al
NilArthur Thomas
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.692-1.739
1.570-1.591
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
1.8 Birefringence
0.240
0.020-0.021
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Phosphosiderite and Augelite Optic Character

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

Phosphosiderite and Augelite Transparency

Similar to their colors, Phosphosiderite and Augelite 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, Phosphosiderite is Transparent while Phosphosiderite is Transparent in appearance.