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Phosphosiderite
Phosphosiderite

Dioptase
Dioptase



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Phosphosiderite
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Dioptase

Phosphosiderite and Dioptase Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Pale rose-red carmine-red colorlessAnthony et al
Weak; dark emerald green

Dispersion

0.040.04
0.005 1
👆🏻

Transparency

Transparent
TranslucentHerve Nicolas Lazzarelli

Refractive Index

1.692-1.7391.644-1.720
1 3.25
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Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

0.2400.051-0.053
0 0.296
👆🏻

Clarity

Transparent
TranslucentHerve Nicolas Lazzarelli

Phosphosiderite and Dioptase Optic Character

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

Similar to their colors, Phosphosiderite and Dioptase 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.