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Phosgenite
Phosgenite

Coral
Coral



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Phosgenite
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Coral

Phosgenite and Coral Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Adamantine
Weakly pleochroic with O reddish and E greenish in thick sections.
0.04
-
2.117-2.145
-
tetragonal
0.027
TransparentUlrich Henn and Claudio C. Milisenda
 
-
-
0.03
Translucent
1.486-1.658
-
Trigonal
0.160-0.172
Translucent

Phosgenite and Coral Optic Character

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

Similar to their colors, Phosgenite and Coral 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.