Vermeil and Proustite Optical Properties

Vermeil

Proustite

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1 Optical Properties

1.1 Luster

Not Available

Adamantine

1.2 Pleochroism

Not Available

Moderate; cochineal-red to blood-red

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

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

1.5 Refractive Index

Not Available2.792-3.087

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

Not Available

OpaqueUlrich Henn and Claudio C. Milisenda

Vermeil and Proustite Optic Character

Vermeil and Proustite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Vermeil 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 Vermeil 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 Blue Gemstones

Vermeil Vs Vishnevite

Vermeil Vs Afghanite

Vermeil Vs Baryte

Vermeil and Proustite Transparency

Similar to their colors, Vermeil 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, Vermeil is Not Available while Vermeil is Not Available in appearance.