Nuummite and Lapis lazuli Physical Properties

Nuummite

Lapis lazuli

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.18-3.372.50-3.00

1 7.18

1.5 Fracture

Conchoidal

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

1.6 Cleavage

Perfect on 210

3,6

1.7 Mohs Hardness

5.5-65.5

2 10

1.8 Chemical Composition

Not Available

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

Nuummite and Lapis lazuli Chemical Formula

While comparing Nuummite 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 Nuummite and Lapis lazuli chemical formula.

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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Nuummite and Lapis lazuli Specific Gravity

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