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Phlogopite
Phlogopite

Cerussite
Cerussite



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Phlogopite
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Cerussite

Phlogopite and Cerussite Optical Properties

Optical Properties

Luster

Pearly
Adamantine, Vitreous, Resinous

Pleochroism

-
-

Dispersion

0.040.06
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.530-1.5731.803-2.078
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.0280-0.04500.273
0 0.296
👆🏻

Clarity

-
Transparent

Phlogopite and Cerussite Optic Character

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

Similar to their colors, Phlogopite and Cerussite 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.