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Rutile
Rutile

Phlogopite
Phlogopite



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Rutile
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Phlogopite

Rutile and Phlogopite 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
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Transparency

Transparent, Translucent
-

Refractive Index

2.609-2.9031.530-1.573
1 3.25
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Optic Character

-
-

Crystal System

tetragonal
monoclinic

Birefringence

0.2960.0280-0.0450
0 0.296
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Clarity

Transparent
-

Rutile and Phlogopite Optic Character

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

Similar to their colors, Rutile and Phlogopite 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.