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Rutile
Rutile

Mottramite
Mottramite



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Rutile
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Mottramite

Rutile and Mottramite Optical Properties

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Optical Properties

Luster

Adamantine
Greasy

Pleochroism

Weak to distinct brownish red-green-yellow
Visible X=Y= canary yellow to greenish yellow

Dispersion

0.330.04
0.005 1
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Transparency

Transparent, Translucent
-

Refractive Index

2.609-2.9032.170
1 3.25
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Optic Character

-
-

Crystal System

tetragonal
Orthorhombic

Birefringence

0.2960.150
0 0.296
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Clarity

Transparent
-

Rutile and Mottramite Optic Character

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

Similar to their colors, Rutile and Mottramite 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.