Sellaite and Amazonite Physical Properties

Sellaite

Amazonite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.14-3.16

2.55-2.57

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect on {010} and {110}

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

1.7 Mohs Hardness

5-5.5

6-6.5

1.8 Chemical Composition

MgF 2Ulrich Henn and Claudio C.

KAlSi₃O₈

Sellaite and Amazonite Chemical Formula

While comparing Sellaite and Amazonite 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 Sellaite and Amazonite chemical formula.

Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.
Chemical formula of Amazonite- KAlSi₃O₈

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Sellaite and Amazonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sellaite and Amazonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sellaite and Amazonite Optical Properties during the identification of gemstone. Specific gravity of Sellaite is 2.55-2.57 whereas that of Amazonite is 2.55-2.57.