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Siderite
Siderite

Pollucite
Pollucite



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Siderite
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Pollucite

Siderite and Pollucite Optical Properties

Optical Properties

Luster

Pearly
Vitreous, Greasy

Pleochroism

-
-

Dispersion

0.040.01
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent, Translucent

Refractive Index

1.633-1.8751.517-1.525
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Isometric

Birefringence

0.242-9999
0 0.296
👆🏻

Clarity

Transparent
Transparent

Siderite and Pollucite Optic Character

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

Siderite and Pollucite Transparency

Similar to their colors, Siderite and Pollucite 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, Siderite is Transparent and Translucent while Siderite is Transparent and Translucent in appearance.