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Phosgenite
Phosgenite

Orbicular jasper
Orbicular jasper



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Phosgenite
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Orbicular jasper

Phosgenite and Orbicular jasper Optical Properties

Optical Properties

Luster

Adamantine
-

Pleochroism

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

0.040.01
0.005 1
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Transparency

-
-

Refractive Index

2.117-2.145-9999
1 3.25
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Optic Character

-
-

Crystal System

tetragonal
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Birefringence

0.027-9999
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Phosgenite and Orbicular jasper Optic Character

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

Similar to their colors, Phosgenite and Orbicular jasper 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.