Lazulite and Spinel Physical Properties

Lazulite

Spinel

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.173.64-3.66

1 7.18

1.5 Fracture

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

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{001} Indistinct, {???} Indistinct

None, but may exhibit slight parting

1.7 Mohs Hardness

5.58

2 10

1.8 Chemical Composition

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

MgAl₂O₄

Lazulite and Spinel Chemical Formula

While comparing Lazulite and Spinel 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 Spinel 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 Spinel- MgAl₂O₄

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Lazulite and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazulite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.