Agrellite and Lazurite Physical Properties

Agrellite

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

2.882.75

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

perfect [110]

Imperfect on {110}

1.7 Mohs Hardness

5.55.5

2 10

1.8 Chemical Composition

NaCa2Si4O10F

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

Agrellite and Lazurite Chemical Formula

While comparing Agrellite 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 Agrellite and Lazurite chemical formula.

Chemical formula of Agrellite- NaCa2Si4O10F
Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

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Agrellite and Lazurite Specific Gravity

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