Moldavite and Chalcedony Physical Properties

Moldavite

Chalcedony

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.32-2.38

2.55-2.70

1.5 Fracture

ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)

Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann

1.6 Cleavage

Not Available

Absent

1.7 Mohs Hardness

5.5

6.5-7

1.8 Chemical Composition

SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)

SiO₂

Moldavite and Chalcedony Chemical Formula

While comparing Moldavite and Chalcedony 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 Moldavite and Chalcedony chemical formula.

Chemical formula of Moldavite- SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)
Chemical formula of Chalcedony- SiO₂

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Moldavite and Chalcedony Specific Gravity

Another important criteria for qualitative analysis of gemstones is Moldavite and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moldavite and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Moldavite is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.