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Phlogopite
Phlogopite

Verdite
Verdite



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Phlogopite
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Verdite

Phlogopite and Verdite Optical Properties

Optical Properties

Luster

Pearly
Vitreous, Silky

Pleochroism

-
Extreme

Dispersion

0.040.03
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.530-1.5731.580
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c

Birefringence

0.0280-0.0450-9999
0 0.296
👆🏻

Clarity

-
Translucent

Phlogopite and Verdite Optic Character

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

Similar to their colors, Phlogopite and Verdite 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.