Lapis lazuli and Fluorite Physical Properties

Lapis lazuli

Fluorite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

slightly water soluble and in hot hydrochloric acid

1.3 Durability

Not Available

1.4 Specific Gravity

2.50-3.003.00-3.25

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

3,6

Octahedral, perfect on {111}, parting on {011}

1.7 Mohs Hardness

5.54

2 10

1.8 Chemical Composition

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

CaF₂

Lapis lazuli and Fluorite Chemical Formula

While comparing Lapis lazuli and Fluorite 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 Fluorite 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
Chemical formula of Fluorite- CaF₂

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Lapis lazuli and Fluorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lapis lazuli and Fluorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lapis lazuli and Fluorite Optical Properties during the identification of gemstone. Specific gravity of Lapis lazuli is 3.00-3.25 whereas that of Fluorite is 3.00-3.25.