Sugilite and Annabergite Physical Properties

Sugilite

Annabergite

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1 Physical Properties

1.1 Tenacity

Not Available

Sectile

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.69-2.793.07

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

Poor on {0001}

Perfect on {010}, indistinct on {100} and {102}

1.7 Mohs Hardness

5.5-6.52

2 10

1.8 Chemical Composition

KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Ni3(AsO4)2•8(H2O)

Sugilite and Annabergite Chemical Formula

While comparing Sugilite and Annabergite 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 Sugilite and Annabergite chemical formula.

Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)

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Sugilite and Annabergite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sugilite and Annabergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sugilite and Annabergite Optical Properties during the identification of gemstone. Specific gravity of Sugilite is 3.07 whereas that of Annabergite is 3.07.