Ajoite and Lazurite Physical Properties

Ajoite

Lazurite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Decomposed by acids

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.962.75

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Perfect on {010}

Imperfect on {110}

1.7 Mohs Hardness

55.5

2 10

1.8 Chemical Composition

(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)

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

Ajoite and Lazurite Chemical Formula

While comparing Ajoite 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 Ajoite and Lazurite chemical formula.

Chemical formula of Ajoite- (K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)
Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

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Ajoite and Lazurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ajoite and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ajoite and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Ajoite is 2.75 whereas that of Lazurite is 2.75.