Lawsonite and Ettringite Physical Properties

Lawsonite

Ettringite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

3.091.77

1 7.18

1.5 Fracture

White, Yellow, Pale blue, Brittle, Uneven

Not Available

1.6 Cleavage

Perfect on {100} and {010}, imperfect on {101}

Perfect on {10 1 0}

1.7 Mohs Hardness

82-2.5

2 10

1.8 Chemical Composition

Not Available

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

Lawsonite and Ettringite Chemical Formula

While comparing Lawsonite 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 Lawsonite and Ettringite chemical formula.

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

Compare Blue Gemstones

Lawsonite Vs Paraiba

Lawsonite Vs Sulfur

Lawsonite Vs Sylvite

Lawsonite and Ettringite Specific Gravity

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