Lazurite and Periclase Physical Properties

Lazurite

Periclase

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.753.7-3.9

1 7.18

1.5 Fracture

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

Conchoidal, Brittle

1.6 Cleavage

Imperfect on {110}

{001} perfect; {111} imperfect, may exhibit parting on , {011}

1.7 Mohs Hardness

5.55.5-6

2 10

1.8 Chemical Composition

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

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Lazurite and Periclase Chemical Formula

While comparing Lazurite and Periclase 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 Lazurite and Periclase chemical formula.

Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

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Lazurite and Periclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazurite and Periclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazurite and Periclase Optical Properties during the identification of gemstone. Specific gravity of Lazurite is 3.7-3.9 whereas that of Periclase is 3.7-3.9.