Apatite and Lazurite Physical Properties

Apatite

Lazurite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.16-3.23

Conchoidal, Uneven, Conchoidal to uneven

[0001] indistinct, [1010] indistinct

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

Brittle

Soluble

2.75

Uneven, Conchoidal

Imperfect on {110}

5.5

(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Apatite and Lazurite Chemical Formula

While comparing Apatite and Lazurite 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 Lazurite chemical formula.

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Apatite and Lazurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite Vs Lazurite during the identification of gemstone. Specific gravity of Apatite is whereas that of Lazurite is .