Emerald and Chalcedony Physical Properties

Emerald

Chalcedony

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

2.67-2.78

2.55-2.70

1.5 Fracture

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

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

1.6 Cleavage

Imperfect on the [0001]

Absent

1.7 Mohs Hardness

7.5-8

6.5-7

1.8 Chemical Composition

Be₃Al₂SiO₆

SiO₂

Emerald and Chalcedony Chemical Formula

While comparing Emerald 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 Emerald and Chalcedony chemical formula.

Chemical formula of Emerald- Be₃Al₂SiO₆
Chemical formula of Chalcedony- SiO₂

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Emerald and Chalcedony Specific Gravity

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