Andradite and Pyrope Almandine Physical Properties

Andradite

Pyrope Almandine

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.70-4.103.62-4.20

1 7.18

1.5 Fracture

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)

ConchoidalGemdat.org, Management Team (2012), ConchoidalGemdat.org, Management Team (2012)

1.6 Cleavage

none

Not Available

1.7 Mohs Hardness

6.5-77-7.5

2 10

1.8 Chemical Composition

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

(Fe,Mg) 3Al 2(SiO 4) 3gemdat.org , Management Team (2012)

Andradite and Pyrope Almandine Chemical Formula

While comparing Andradite and Pyrope Almandine 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 and Pyrope Almandine chemical formula.

Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Pyrope Almandine- (Fe,Mg) 3Al 2(SiO 4) 3gemdat.org , Management Team (2012)

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Andradite and Pyrope Almandine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andradite and Pyrope Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite and Pyrope Almandine Optical Properties during the identification of gemstone. Specific gravity of Andradite is 3.62-4.20 whereas that of Pyrope Almandine is 3.62-4.20.