Agate and Lapis lazuli Physical Properties

Agate

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

2.60-2.64

2.50-3.00

1.5 Fracture

Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

Indiscernible

3,6

1.7 Mohs Hardness

6.5-7

5.5

1.8 Chemical Composition

SiO₂

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

Agate and Lapis lazuli Chemical Formula

While comparing Agate 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 Agate and Lapis lazuli chemical formula.

Chemical formula of Agate- SiO₂
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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Agate and Lapis lazuli Specific Gravity

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