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Phosphosiderite
Phosphosiderite

Mexican fire opal
Mexican fire opal



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Phosphosiderite
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Mexican fire opal

Phosphosiderite and Mexican fire opal Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

Pale rose-red carmine-red colorlessAnthony et al
-

Dispersion

0.040.01
0.005 1
👆🏻

Transparency

Transparent
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Refractive Index

1.692-1.739-9999
1 3.25
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Optic Character

-
-

Crystal System

-
-

Birefringence

0.240-9999
0 0.296
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Clarity

Transparent
-

Phosphosiderite and Mexican fire opal Optic Character

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

Similar to their colors, Phosphosiderite and Mexican fire opal 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.