Phosgenite and Shattuckite Optical Properties

Phosgenite

Shattuckite

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1 Optical Properties

1.1 Luster

Adamantine

Silky

1.2 Pleochroism

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

X = very pale blue; Y = pale blue; Z = deep blue

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Gemmological Tables (2004) More from other references

Translucent

1.5 Refractive Index

2.117-2.1451.752-1.815

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

Orthorhombic

1.8 Birefringence

0.0270.063

0 0.296

1.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Translucent

Phosgenite and Shattuckite Optic Character

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

Similar to their colors, Phosgenite and Shattuckite 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.