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Magnesite
Magnesite

Siderite
Siderite



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Magnesite
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Siderite

Magnesite and Siderite Optical Properties

Optical Properties

Luster

Vitreous
Pearly

Pleochroism

-
-

Dispersion

0.030.04
0.005 1
👆🏻

Transparency

Translucent
Transparent, Translucent

Refractive Index

1.509-1.7201.633-1.875
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Trigonal

Birefringence

0.1910.242
0 0.296
👆🏻

Clarity

Translucent
Transparent

Magnesite and Siderite Optic Character

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

Magnesite and Siderite Transparency

Similar to their colors, Magnesite 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, Magnesite is Translucent while Magnesite is Translucent in appearance.