Demantoid and Ettringite Physical Properties

Demantoid

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

3.77-3.951.77

1 7.18

1.5 Fracture

Not Available

1.6 Cleavage

Not Available

Perfect on {10 1 0}

1.7 Mohs Hardness

6.52-2.5

2 10

1.8 Chemical Composition

Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

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

Demantoid and Ettringite Chemical Formula

While comparing Demantoid 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 Demantoid and Ettringite chemical formula.

Chemical formula of Demantoid- Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Compare Green Gemstones

Demantoid Vs Emerald

Demantoid Vs Faustite

Demantoid Vs Euclase

Demantoid and Ettringite Specific Gravity

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