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Phosphosiderite
Phosphosiderite

Sunstone
Sunstone



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Phosphosiderite
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Sunstone

Phosphosiderite and Sunstone Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Pale rose-red carmine-red colorlessAnthony et al
Weak or absentWalter Schumann

Dispersion

0.040.01
0.005 1
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Transparency

Transparent
Transparent, Translucent, Transparent to translucent

Refractive Index

1.692-1.7391.53-1.55
1 3.25
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Optic Character

-
-

Crystal System

-
Triclinic

Birefringence

0.2400.007-0.010
0 0.296
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Clarity

Transparent
Transparent to translucent

Phosphosiderite and Sunstone Optic Character

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

Similar to their colors, Phosphosiderite and Sunstone 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.