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Malachite and Prehnite Physical Properties


Prehnite and Malachite Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.25-4.10   
2.80-2.95   

Fracture
Conchoidal, Conchoidal, Gemstones (2009), Uneven   
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic   

Cleavage
Perfect on { 2 01} fair on {010}   
Distinct on [001]   

Mohs Hardness
3.5-4   
6-6.5   

Chemical Composition
Cu2CO3(OH)2   
Ca2Al2Si3O12(OH)   

Optical Properties >>
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Malachite and Prehnite Chemical Formula

While comparing Malachite and Prehnite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Malachite and Prehnite chemical formula.

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Malachite and Prehnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Malachite and Prehnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Prehnite Optical Properties during the identification of gemstone. Specific gravity of Malachite is 2.80-2.95 whereas that of Prehnite is 2.80-2.95.

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