Lapis lazuli and Rutile Physical Properties

Lapis lazuli

Rutile

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

2.50-3.00

Uneven-Conchoidal, ConchoidalWalter Schumann

3,6

5.5

The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)₈Al₆Si₆O₂₄(S,SO)₄

Insoluble in acids

4.20-4.30

Uneven, Conchoidal

{110} good, 100 moderate, parting on {092} and {011}

6-6.5

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Lapis lazuli and Rutile Chemical Formula

While comparing Lapis lazuli and Rutile 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 Lapis lazuli and Rutile chemical formula.

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Lapis lazuli and Rutile Specific Gravity

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