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Phlogopite
Phlogopite

Richterite
Richterite



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Phlogopite
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Richterite

Phlogopite and Richterite Optical Properties

Optical Properties

Luster

Pearly
Vitreous

Pleochroism

-
Strong: pale yellow

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.530-1.5731.615
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
monoclinic

Birefringence

0.0280-0.04500.021
0 0.296
👆🏻

Clarity

-
-

Phlogopite and Richterite Optic Character

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

Similar to their colors, Phlogopite and Richterite 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.