Plumbogummite and Sard Physical Properties

Plumbogummite

Sard

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.0142.58-2.63

1 7.18

1.5 Fracture

Uneven, Conchoidal

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

None

Not Available

1.7 Mohs Hardness

4-56.5-7

2 10

1.8 Chemical Composition

Not Available

SiO 2Ulrich Henn and Claudio C.

Plumbogummite and Sard Chemical Formula

While comparing Plumbogummite and Sard 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 Plumbogummite and Sard chemical formula.

Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.

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Plumbogummite and Sard Specific Gravity

Another important criteria for qualitative analysis of gemstones is Plumbogummite and Sard Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Plumbogummite and Sard Optical Properties during the identification of gemstone. Specific gravity of Plumbogummite is 2.58-2.63 whereas that of Sard is 2.58-2.63.