Nacre and Apatite Physical Properties

Nacre

Apatite

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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

Not Available3.16-3.23

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

Not Available5

2 10

1.8 Chemical Composition

Not Available

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

Nacre and Apatite Chemical Formula

While comparing Nacre and Apatite 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 Nacre and Apatite 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

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Nacre and Apatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nacre and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nacre and Apatite Optical Properties during the identification of gemstone. Specific gravity of Nacre is 3.16-3.23 whereas that of Apatite is 3.16-3.23.