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Aventurine
Aventurine

Phosphosiderite
Phosphosiderite



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Aventurine
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Phosphosiderite

Aventurine and Phosphosiderite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
Pale rose-red carmine-red colorlessAnthony et al

Dispersion

0.010.04
0.005 1
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Transparency

Translucent, Opaque . May be translucent when backlit on the edges.
Transparent

Refractive Index

1.544-1.5531.692-1.739
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
-

Birefringence

0.007-0.0100.240
0 0.296
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Clarity

Translucent
Transparent

Aventurine and Phosphosiderite Optic Character

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

Aventurine and Phosphosiderite Transparency

Similar to their colors, Aventurine 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, Aventurine is Translucent and Opaque . May be translucent when backlit on the edges. while Aventurine is Translucent and Opaque . May be translucent when backlit on the edges. in appearance.