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Lazulite
Lazulite

Bertrandite
Bertrandite



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Lazulite
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Bertrandite

Lazulite and Bertrandite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.04-3.17
Uneven
{001} Indistinct, {???} Indistinct
5.5
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
 
-
-
-
2.59-2.60
-
{001} Perfect, {110} Distinct, {101} Distinct
6-7
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

Lazulite and Bertrandite Chemical Formula

While comparing Lazulite and Bertrandite 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 Bertrandite chemical formula.

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Lazulite and Bertrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazulite and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite Vs Bertrandite during the identification of gemstone. Specific gravity of Lazulite is whereas that of Bertrandite is .