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Phosphosiderite
Phosphosiderite

Tigers Eye
Tigers Eye



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Phosphosiderite
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Tigers Eye

Phosphosiderite and Tigers Eye Optical Properties

Optical Properties

Luster

Vitreous
Silky

Pleochroism

Pale rose-red carmine-red colorlessAnthony et al
-

Dispersion

0.040.01
0.005 1
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Transparency

Transparent
Opaque

Refractive Index

1.692-1.7391.534-1.540
1 3.25
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Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

0.240-9999
0 0.296
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Clarity

Transparent
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Phosphosiderite and Tigers Eye Optic Character

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

Similar to their colors, Phosphosiderite and Tigers Eye 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.