Lapis lazuli and Cinnabar Physical Properties

Lapis lazuli

Cinnabar

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1 Physical Properties

1.1 Tenacity

Not Available

Slightly sectile

1.2 Solubility

Not Available

1.04 x 10⁻²⁵ g per 100 ml water (Ksp at 25°C = 2 x 10⁻³²)

1.3 Durability

Not Available

1.4 Specific Gravity

2.50-3.002

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gemstones (2009), Brittle

1.6 Cleavage

3,6

Prismatic {10 1 0}, perfect

1.7 Mohs Hardness

5.52-2.5

2 10

1.8 Chemical Composition

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

HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Lapis lazuli and Cinnabar Chemical Formula

While comparing Lapis lazuli and Cinnabar 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 Cinnabar 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 Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Lapis lazuli and Cinnabar Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lapis lazuli and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lapis lazuli and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Lapis lazuli is 2 whereas that of Cinnabar is 2.