Lapis lazuli and Swiss blue topaz Physical Properties

Lapis lazuli

Swiss blue topaz

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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

2.50-3.00Not Available

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

3,6

Not Available

1.7 Mohs Hardness

5.5Not Available

2 10

1.8 Chemical Composition

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

Not Available

Lapis lazuli and Swiss blue topaz Chemical Formula

While comparing Lapis lazuli and Swiss blue topaz 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 Swiss blue topaz 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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Lapis lazuli and Swiss blue topaz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lapis lazuli and Swiss blue topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lapis lazuli and Swiss blue topaz Optical Properties during the identification of gemstone. Specific gravity of Lapis lazuli is Not Available whereas that of Swiss blue topaz is Not Available.