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Phlogopite
Phlogopite

Linarite
Linarite



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Phlogopite
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Linarite

Phlogopite and Linarite Optical Properties

Optical Properties

Luster

Pearly
Sub-Adamantine, Vitreous

Pleochroism

-
X = pale blue; Y = blue; Z = Prussian blue

Dispersion

0.040.05
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.530-1.5731.809-1.859
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
monoclinic

Birefringence

0.0280-0.04500.050
0 0.296
👆🏻

Clarity

-
Transparent

Phlogopite and Linarite Optic Character

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

Similar to their colors, Phlogopite and Linarite 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.