Andradite Garnet and Ettringite Physical Properties

Andradite Garnet

Ettringite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

3.8-3.91.77

1 7.18

1.5 Fracture

Not Available

1.6 Cleavage

None

Perfect on {10 1 0}

1.7 Mohs Hardness

6.5-7.52-2.5

2 10

1.8 Chemical Composition

Ca₃Fe³⁺₂Si₃O₁₂

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

Andradite Garnet and Ettringite Chemical Formula

While comparing Andradite Garnet 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 Andradite Garnet and Ettringite chemical formula.

Chemical formula of Andradite Garnet- Ca₃Fe³⁺₂Si₃O₁₂
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Andradite Garnet and Ettringite Specific Gravity

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