×

Phlogopite
Phlogopite

Lepidocrocite
Lepidocrocite



ADD
Compare
X
Phlogopite
X
Lepidocrocite

Phlogopite and Lepidocrocite Optical Properties

Optical Properties

Luster

Pearly
-

Pleochroism

-
Strong; X = colorless to yellow; Y = orange

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.530-1.5731.940
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.0280-0.0450-9999
0 0.296
👆🏻

Clarity

-
-

Phlogopite and Lepidocrocite Optic Character

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

Similar to their colors, Phlogopite and Lepidocrocite 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.