Ettringite and Pyrope Physical Properties

Ettringite

Pyrope

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Partially soluble in water

insoluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

1.773.62-3.87

1 7.18

1.5 Fracture

Not Available

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Perfect on {10 1 0}

None

1.7 Mohs Hardness

2-2.57-7.5

2 10

1.8 Chemical Composition

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

Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Ettringite and Pyrope Chemical Formula

While comparing Ettringite and Pyrope 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 Ettringite and Pyrope chemical formula.

Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Compare Yellow Gemstones

Ettringite Vs Forsterite

Ettringite Vs Gadolinium Gallium Garnet

Ettringite Vs Garnet

Ettringite and Pyrope Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ettringite and Pyrope Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Pyrope Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 3.62-3.87 whereas that of Pyrope is 3.62-3.87.