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Azure malachite
Azure malachite

Proustite
Proustite



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Azure malachite
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Proustite

Azure malachite and Proustite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Adamantine
1.2 Pleochroism
Not Available
Moderate; cochineal-red to blood-red
1.3 Dispersion
NANA
Fluorite Optical Properties
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
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Trigonal
1.8 Birefringence
Not Available0.295-0.296
Achroite
0 0.296
1.9 Clarity
Not Available
OpaqueUlrich Henn and Claudio C. Milisenda

Azure malachite and Proustite Optic Character

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

Azure malachite and Proustite Transparency

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