Zircon and Ettringite Physical Properties

Zircon

Ettringite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

insoluble

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

3.93-4.731.77

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Not Available

1.6 Cleavage

{110} and {111}

Perfect on {10 1 0}

1.7 Mohs Hardness

7.52-2.5

2 10

1.8 Chemical Composition

ZrSiO₄

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

Zircon and Ettringite Chemical Formula

While comparing Zircon 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 Zircon and Ettringite chemical formula.

Chemical formula of Zircon- ZrSiO₄
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Zircon and Ettringite Specific Gravity

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