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Lazurite
Lazurite

Smithsonite
Smithsonite



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Lazurite
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Smithsonite

Lazurite and Smithsonite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.754.00-4.65
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Uneven, Sub-Conchoidal

Cleavage

Imperfect on {110}
Perfect on [1011]

Mohs Hardness

5.55-5.5
2 10
👆🏻

Chemical Composition

(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
ZnCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Lazurite and Smithsonite Chemical Formula

While comparing Lazurite and Smithsonite 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 Lazurite and Smithsonite chemical formula.

  • Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
  • Chemical formula of Smithsonite- ZnCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Lazurite and Smithsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazurite and Smithsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazurite and Smithsonite Optical Properties during the identification of gemstone. Specific gravity of Lazurite is 4.00-4.65 whereas that of Smithsonite is 4.00-4.65.