Home
Gemstones


Coral and Phosgenite Optical Properties


Phosgenite and Coral Optical Properties


Optical Properties

Luster
Not Available   
Adamantine   

Pleochroism
AbsentWalter Schumann   
Weakly pleochroic with O reddish and E greenish in thick sections.   

Dispersion
None   
Not Available   

Transparency
Translucent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.486-1.658   
2.117-2.145   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
tetragonal   

Birefringence
0.160-0.172   
0.027   

Clarity
Translucent   
TransparentUlrich Henn and Claudio C. Milisenda   

Benefits >>
<< Physical Properties

Coral and Phosgenite Optic Character

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

Compare Birthstones

Coral and Phosgenite Transparency

Similar to their colors, Coral 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, Coral is Translucent while Coral is Translucent in appearance.

Birthstones

Birthstones

» More Birthstones

Compare Birthstones

» More Compare Birthstones