Lazulite and Celestine Physical Properties

Lazulite

Celestine

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.173.90-4.00

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

{001} Indistinct, {???} Indistinct

Perfect on {001}, good on {210}, poor on {010}

1.7 Mohs Hardness

5.53-3.5

2 10

1.8 Chemical Composition

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

SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Lazulite and Celestine Chemical Formula

While comparing Lazulite and Celestine 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 Celestine 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 Celestine- SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Lazulite and Celestine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazulite and Celestine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Celestine Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 3.90-4.00 whereas that of Celestine is 3.90-4.00.