Apatite and Chrysoprase Physical Properties

Apatite

Chrysoprase

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.16-3.23

2.58-2.64

1.5 Fracture

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

Gems, Sixth Edition (2006)

1.6 Cleavage

[0001] indistinct, [1010] indistinct

None

1.7 Mohs Hardness

6.5-7

1.8 Chemical Composition

Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

SiO₂ (with a high level of nickel impurities )

Apatite and Chrysoprase Chemical Formula

While comparing Apatite and Chrysoprase 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 Apatite and Chrysoprase chemical formula.

Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Chrysoprase- SiO₂ (with a high level of nickel impurities )

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Apatite and Chrysoprase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Chrysoprase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Chrysoprase Optical Properties during the identification of gemstone. Specific gravity of Apatite is 2.58-2.64 whereas that of Chrysoprase is 2.58-2.64.