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Phosgenite
Phosgenite

Anhydrite
Anhydrite



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Phosgenite and Anhydrite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine
Pearly, Greasy
1.2 Pleochroism
Weakly pleochroic with O reddish and E greenish in thick sections.
For violet varieties
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
0.01
Rank: 27 (Overall)
Fluorite Optical Properties
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent
1.5 Refractive Index
2.117-2.145
1.570-1.614
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
Orthorhombic
1.8 Birefringence
0.027
0.042-0.044
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Phosgenite and Anhydrite Optic Character

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

Similar to their colors, Phosgenite and Anhydrite 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.