Pietersite and Lazurite Physical Properties

Pietersite

Lazurite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available2.75

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

Imperfect on {110}

1.7 Mohs Hardness

55.5

2 10

1.8 Chemical Composition

Not Available

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

Pietersite and Lazurite Chemical Formula

While comparing Pietersite 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 Pietersite and Lazurite chemical formula.

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

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Pietersite and Lazurite Specific Gravity

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