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Idocrase
Idocrase

Siderite
Siderite



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Idocrase
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Siderite

Idocrase and Siderite Optical Properties

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Optical Properties

Luster

-
Pearly

Pleochroism

-
-

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.67-1.761.633-1.875
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
Trigonal

Birefringence

-99990.242
0 0.296
👆🏻

Clarity

-
Transparent

Idocrase and Siderite Optic Character

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

Idocrase and Siderite Transparency

Similar to their colors, Idocrase 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, Idocrase is while Idocrase is in appearance.