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Malachite
Malachite

Legrandite
Legrandite



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Malachite
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Legrandite

Malachite and Legrandite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine, Vitreous, Silky, Fibrous
Vitreous
1.2 Pleochroism
Not Available
Colorless
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Opaque
Gems
1.5 Refractive Index
1.655-1.9091.702-1.740
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
monoclinic
1.8 Birefringence
0.2540.060
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
Gems

Malachite and Legrandite Optic Character

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

Malachite and Legrandite Transparency

Similar to their colors, Malachite and Legrandite 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, Malachite is Opaque while Malachite is Opaque in appearance.