Lazulite and Gypsum Physical Properties

Lazulite

Gypsum

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1 Physical Properties

1.1 Tenacity

Not Available

Flexible

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.172.20-2.40

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones of the world (2001) More from other references

Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

{001} Indistinct, {???} Indistinct

Perfect on {010}, distinct on {100}

1.7 Mohs Hardness

5.52

2 10

1.8 Chemical Composition

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

Lazulite and Gypsum Chemical Formula

While comparing Lazulite and Gypsum 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 Lazulite and Gypsum chemical formula.

Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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Lazulite and Gypsum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazulite and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.