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Phlogopite
Phlogopite

Titanite
Titanite



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Phlogopite
X
Titanite

Phlogopite and Titanite Optical Properties

Optical Properties

Luster

Pearly
Subadamantine, Resinous

Pleochroism

-
Strong: X = nearly colorless; Y = yellow to green; Z = red to yellow-orange

Dispersion

0.040.05
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.530-1.5731.885-1.990
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
monoclinic

Birefringence

0.0280-0.04500.105-0.135
0 0.296
👆🏻

Clarity

-
-

Phlogopite and Titanite Optic Character

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

Phlogopite and Titanite Transparency

Similar to their colors, Phlogopite and Titanite 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, Phlogopite is while Phlogopite is in appearance.