Hematite and Lapis lazuli Physical Properties

Hematite

Lapis lazuli

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.00-5.302.50-3.00

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

None, may show partings on {0001} and {10 1 1}

3,6

1.7 Mohs Hardness

65.5

2 10

1.8 Chemical Composition

Fe 2O 3Arthur Thomas , Gemstones (2009)

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

Hematite and Lapis lazuli Chemical Formula

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

Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Lapis lazuli- The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)₈Al₆Si₆O₂₄(S,SO)₄

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Hematite and Lapis lazuli Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hematite and Lapis lazuli Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hematite and Lapis lazuli Optical Properties during the identification of gemstone. Specific gravity of Hematite is 2.50-3.00 whereas that of Lapis lazuli is 2.50-3.00.