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Rutile
Rutile

Siderite
Siderite



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Rutile
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Siderite

Rutile and Siderite Optical Properties

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Optical Properties

Luster

Adamantine
Pearly

Pleochroism

Weak to distinct brownish red-green-yellow
-

Dispersion

0.330.04
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent, Translucent

Refractive Index

2.609-2.9031.633-1.875
1 3.25
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Optic Character

-
-

Crystal System

tetragonal
Trigonal

Birefringence

0.2960.242
0 0.296
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Clarity

Transparent
Transparent

Rutile and Siderite Optic Character

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

Rutile and Siderite Transparency

Similar to their colors, Rutile 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, Rutile is Transparent and Translucent while Rutile is Transparent and Translucent in appearance.