Poldervaartite and Proustite Optical Properties

Poldervaartite

Proustite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous

Adamantine

1.2 Pleochroism

Weak: colorless light gray bluish grayAnthony et al

Moderate; cochineal-red to blood-red

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Rarely transparentMore from other references

1.5 Refractive Index

1.634-1.6562.792-3.087

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Trigonal

1.8 Birefringence

Not Available0.295-0.296

0 0.296

1.9 Clarity

Transparent

OpaqueUlrich Henn and Claudio C. Milisenda

Poldervaartite and Proustite Optic Character

Poldervaartite and Proustite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Poldervaartite and Proustite 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 Poldervaartite and Proustite 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 Gems Found In Africa

Poldervaartite Vs Prehnite

Poldervaartite Vs Proustite

Poldervaartite Vs Pumpellyite

Poldervaartite and Proustite Transparency

Similar to their colors, Poldervaartite and Proustite 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, Poldervaartite is Transparent while Poldervaartite is Transparent in appearance.