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Pearl
Pearl

Phosgenite
Phosgenite



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Pearl
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Phosgenite

Pearl and Phosgenite Optical Properties

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Optical Properties

Luster

Pearly
Adamantine

Pleochroism

-
Weakly pleochroic with O reddish and E greenish in thick sections.

Dispersion

0.030.04
0.005 1
👆🏻

Transparency

Translucent, Opaque
-

Refractive Index

1.52-1.662.117-2.145
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
tetragonal

Birefringence

0.1560.027
0 0.296
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Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Pearl and Phosgenite Optic Character

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

Pearl and Phosgenite Transparency

Similar to their colors, Pearl and Phosgenite 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, Pearl is Translucent and Opaque while Pearl is Translucent and Opaque in appearance.