Agate and Malachite Physical Properties

Agate

Malachite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.60-2.64

3.25-4.10

1.5 Fracture

Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

Conchoidal, Conchoidal, Gemstones (2009), Uneven

1.6 Cleavage

Indiscernible

Perfect on { 2 01} fair on {010}

1.7 Mohs Hardness

6.5-7

3.5-4

1.8 Chemical Composition

SiO₂

Cu₂CO₃(OH)₂

Agate and Malachite Chemical Formula

While comparing Agate and Malachite 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 Agate and Malachite chemical formula.

Chemical formula of Agate- SiO₂
Chemical formula of Malachite- Cu₂CO₃(OH)₂

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Agate and Malachite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Agate and Malachite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Agate and Malachite Optical Properties during the identification of gemstone. Specific gravity of Agate is 3.25-4.10 whereas that of Malachite is 3.25-4.10.