Hematite and Proustite Optical Properties

Hematite

Proustite

Add ⊕

1 Optical Properties

1.1 Luster

Not Available

Adamantine

1.2 Pleochroism

O = brownish red; E = yellowish red

Moderate; cochineal-red to blood-red

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references

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

1.5 Refractive Index

2.690-3.2202.792-3.087

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

1.8 Birefringence

0.2800.295-0.296

0 0.296

1.9 Clarity

OpaqueHerve Nicolas Lazzarelli

OpaqueUlrich Henn and Claudio C. Milisenda

Hematite and Proustite Optic Character

Hematite and Proustite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Hematite 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 Hematite 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 for Aquarius

Hematite Vs Angelite

Hematite Vs Turquoise

Hematite and Proustite Transparency

Similar to their colors, Hematite 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, Hematite is Blue Chart Gem Identification (2010) More from other references and OpaqueHerve Nicolas Lazzarelli while Hematite is Blue Chart Gem Identification (2010) More from other references and OpaqueHerve Nicolas Lazzarelli in appearance.