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Elbaite
Elbaite

Siderite
Siderite



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Elbaite
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Siderite

Elbaite and Siderite Optical Properties

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Optical Properties

Luster

Vitreous
Pearly

Pleochroism

Pale green
-

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent

Refractive Index

1.614-1.6661.633-1.875
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Trigonal

Birefringence

0.014-0.0320.242
0 0.296
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Clarity

Transparent
Transparent

Elbaite and Siderite Optic Character

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

Elbaite and Siderite Transparency

Similar to their colors, Elbaite 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, Elbaite is Transparent while Elbaite is Transparent in appearance.