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Siderite
Siderite

Scheelite
Scheelite



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Siderite
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Scheelite

Siderite and Scheelite Optical Properties

Optical Properties

Luster

Pearly
Vitreous, Adamantine

Pleochroism

-
Definite dichoric in yellow (yellow to orange-brown)

Dispersion

0.040.04
0.005 1
👆🏻

Transparency

Transparent, Translucent
Translucent, Transparent

Refractive Index

1.633-1.8751.918-1.936
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
tetragonal

Birefringence

0.2420.016
0 0.296
👆🏻

Clarity

Transparent
Translucent

Siderite and Scheelite Optic Character

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

Similar to their colors, Siderite and Scheelite 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.