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Malachite
Malachite

Carnelian
Carnelian



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Malachite
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Carnelian

Malachite and Carnelian Optical Properties

1 Optical Properties
1.1 Luster
Adamantine, Vitreous, Silky, Fibrous
Vitreous
1.2 Pleochroism
Not Available
AbsentWalter Schumann
1.3 Dispersion
NoneNone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Opaque
Translucent, Transparent to nearly opaque
1.5 Refractive Index
1.655-1.9091.535-1.539
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Trigonal
1.8 Birefringence
0.2540.003-0.009
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
Translucent

Malachite and Carnelian Optic Character

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

Similar to their colors, Malachite and Carnelian 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.