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Siderite
Siderite

Vanadinite
Vanadinite



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Siderite
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Vanadinite

Siderite and Vanadinite Optical Properties

Optical Properties

Luster

Pearly
Resinous

Pleochroism

-
-

Dispersion

0.040.15
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.633-1.8752.416
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Hexagonal

Birefringence

0.2420.066
0 0.296
👆🏻

Clarity

Transparent
-

Siderite and Vanadinite Optic Character

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

Similar to their colors, Siderite and Vanadinite 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.