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Williamsite
Williamsite

Siderite
Siderite



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Williamsite
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Siderite

Williamsite and Siderite Optical Properties

Optical Properties

Luster

Waxy, Silky, Resinous, Greasy
Pearly

Pleochroism

-
-

Dispersion

0.030.04
0.005 1
👆🏻

Transparency

TranslucentHerve Nicolas Lazzarelli
Transparent, Translucent

Refractive Index

1.530-1.5751.633-1.875
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

-99990.242
0 0.296
👆🏻

Clarity

TranslucentHerve Nicolas Lazzarelli
Transparent

Williamsite and Siderite Optic Character

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

Williamsite and Siderite Transparency

Similar to their colors, Williamsite and Siderite 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, Williamsite is TranslucentHerve Nicolas Lazzarelli while Williamsite is TranslucentHerve Nicolas Lazzarelli in appearance.