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Boracite
Boracite

Lazulite
Lazulite



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Boracite
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Lazulite

Boracite and Lazulite Physical Properties

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Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.95-2.963.04-3.17
1 7.18
👆🏻

Fracture

Conchoidal
Uneven

Cleavage

None
{001} Indistinct, {???} Indistinct

Mohs Hardness

7-7.55.5
2 10
👆🏻

Chemical Composition

Mg 3B 7O 13ClMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Boracite and Lazulite Chemical Formula

While comparing Boracite 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 Boracite and Lazulite chemical formula.

  • Chemical formula of Boracite- Mg 3B 7O 13ClMichael O’Donoghue , 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

Boracite and Lazulite Specific Gravity

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