Dumortierite and Lazulite Physical Properties

Dumortierite

Lazulite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.26-3.413.04-3.17

1 7.18

1.5 Fracture

Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

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

1.6 Cleavage

Distinct on {100}, poor on {110}; parting on {001}

{001} Indistinct, {???} Indistinct

1.7 Mohs Hardness

7-8.55.5

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

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

Dumortierite and Lazulite Chemical Formula

While comparing Dumortierite 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 Dumortierite and Lazulite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈
Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

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Dumortierite and Lazulite Specific Gravity

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