Phosgenite and Williamsite Optical Properties

Phosgenite

Williamsite

Add ⊕

Optical Properties

Luster

Adamantine

Waxy, Silky, Resinous, Greasy

Pleochroism

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

Dispersion

0.040.03

0.005 1

👆🏻

Transparency

TranslucentHerve Nicolas Lazzarelli

Refractive Index

2.117-2.1451.530-1.575

1 3.25

👆🏻

Optic Character

Crystal System

tetragonal

Birefringence

0.027-9999

0 0.296

👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda

TranslucentHerve Nicolas Lazzarelli

Phosgenite and Williamsite Optic Character

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

Phosgenite Vs Thomsonite

Phosgenite Vs Whitlockite

Phosgenite Vs Witherite

Phosgenite and Williamsite Transparency

Similar to their colors, Phosgenite and Williamsite 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.