Celestine and Poudretteite Physical Properties

Celestine

Poudretteite

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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

3.90-4.002.51-2.53

1 7.18

1.5 Fracture

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

Conchoidal, Splintery

1.6 Cleavage

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

None

1.7 Mohs Hardness

3-3.55

2 10

1.8 Chemical Composition

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

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Celestine and Poudretteite Chemical Formula

While comparing Celestine and Poudretteite 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 Poudretteite chemical formula.

Chemical formula of Celestine- SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

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Celestine and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Celestine and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Celestine and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Celestine is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.