Emerald and Foitite Physical Properties

Emerald

Foitite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

2.67-2.783.17

1 7.18

1.5 Fracture

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

Handbook of mineralogy (2001)

1.6 Cleavage

Imperfect on the [0001]

None

1.7 Mohs Hardness

7.5-87

2 10

1.8 Chemical Composition

Be₃Al₂SiO₆

Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)

Emerald and Foitite Chemical Formula

While comparing Emerald and Foitite 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 Foitite chemical formula.

Chemical formula of Emerald- Be₃Al₂SiO₆
Chemical formula of Foitite- Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)

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Emerald and Foitite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Emerald and Foitite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Foitite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 3.17 whereas that of Foitite is 3.17.