Celestine and Andradite Physical Properties

Celestine

Andradite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.90-4.003.70-4.10

1 7.18

1.5 Fracture

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

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

1.6 Cleavage

Perfect on {001}, good on {210}, poor on {010}

none

1.7 Mohs Hardness

3-3.56.5-7

2 10

1.8 Chemical Composition

SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Celestine and Andradite Chemical Formula

While comparing Celestine and Andradite 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 Celestine and Andradite chemical formula.

Chemical formula of Celestine- SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Celestine and Andradite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Celestine and Andradite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Celestine and Andradite Optical Properties during the identification of gemstone. Specific gravity of Celestine is 3.70-4.10 whereas that of Andradite is 3.70-4.10.