Proustite and Lazulite Physical Properties

Proustite

Lazulite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.51-5.643.04-3.17

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

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

1.6 Cleavage

Distinct on {10 1 1}

{001} Indistinct, {???} Indistinct

1.7 Mohs Hardness

2.55.5

2 10

1.8 Chemical Composition

Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Proustite and Lazulite Chemical Formula

While comparing Proustite and Lazulite 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 Proustite and Lazulite chemical formula.

Chemical formula of Proustite- Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Compare Black Gemstones

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Proustite Vs Sheen Obsidian

Proustite Vs Serendibite

Proustite and Lazulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Proustite and Lazulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Proustite and Lazulite Optical Properties during the identification of gemstone. Specific gravity of Proustite is 3.04-3.17 whereas that of Lazulite is 3.04-3.17.