Vesuvianite and Ettringite Physical Properties

Vesuvianite

Ettringite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Vesuvianite is virtually insolouble in acids

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

3.32-3.431.77

1 7.18

1.5 Fracture

Conchoidal, Brittle

Not Available

1.6 Cleavage

Poor on {110} and {100} very poor on {001}

Perfect on {10 1 0}

1.7 Mohs Hardness

6-72-2.5

2 10

1.8 Chemical Composition

Not Available

Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Vesuvianite and Ettringite Chemical Formula

While comparing Vesuvianite and Ettringite 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 Vesuvianite and Ettringite chemical formula.

Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Compare Brown Gemstones

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Vesuvianite Vs Alabaster

Vesuvianite Vs Amber

Vesuvianite and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vesuvianite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vesuvianite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Vesuvianite is 1.77 whereas that of Ettringite is 1.77.