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Phosgenite
Phosgenite

Cacoxenite
Cacoxenite



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Phosgenite
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Cacoxenite

Phosgenite and Cacoxenite Optical Properties

Optical Properties

Luster

Adamantine
Silky

Pleochroism

Weakly pleochroic with O reddish and E greenish in thick sections.
visible: O = Pale yellow E = Canary yellow to yellow orange

Dispersion

0.040.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

2.117-2.1451.575-1.585
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
Hexagonal

Birefringence

0.027-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Phosgenite and Cacoxenite Optic Character

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

Phosgenite and Cacoxenite Transparency

Similar to their colors, Phosgenite and Cacoxenite 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, Phosgenite is while Phosgenite is in appearance.