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Lazulite
Lazulite

Obsidian
Obsidian



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Lazulite
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Obsidian

Lazulite and Obsidian Physical Properties

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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
 
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-
-
2.35-2.60
Conchoidal, ConchoidalWalter Schumann
None
5-5.5
SiO2

Lazulite and Obsidian Chemical Formula

While comparing Lazulite and Obsidian 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 Obsidian chemical formula.

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Lazulite and Obsidian Specific Gravity

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