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Gedrite and Malachite Optical Properties


Malachite and Gedrite Optical Properties


Optical Properties

Luster
Fibrous, Vitreous   
Adamantine, Vitreous, Silky, Fibrous   

Pleochroism
Weak to moderate   
Not Available   

Dispersion
Not Available   
None   

Transparency
Transparent   
Opaque   

Refractive Index
1.625-1.718   
1.655-1.909   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma   
monoclinic   

Birefringence
Not Available   
0.254   

Clarity
Transparent   
Gemmological Tables (2004) More from other references   

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Gedrite and Malachite Optic Character

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

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Gedrite and Malachite Transparency

Similar to their colors, Gedrite and Malachite 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, Gedrite is Transparent while Gedrite is Transparent in appearance.

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