Phosgenite and Pearl Optical Properties

Phosgenite

Pearl

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1 Optical Properties

1.1 Luster

Adamantine

Pearly

1.2 Pleochroism

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

AbsentWalter Schumann

1.3 Dispersion

NANone

0.007 1

1.4 Transparency

Gemmological Tables (2004) More from other references

Translucent, Opaque

1.5 Refractive Index

2.117-2.1451.52-1.66

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

Orthorhombic

1.8 Birefringence

0.0270.156

0 0.296

1.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Translucent

Phosgenite and Pearl Optic Character

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

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Phosgenite and Pearl Transparency

Similar to their colors, Phosgenite and Pearl 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 Gemmological Tables (2004) More from other references while Phosgenite is Gemmological Tables (2004) More from other references in appearance.