Ruby and Arfvedsonite Physical Properties

Ruby

Arfvedsonite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.053.3-3.5

1 7.18

1.5 Fracture

Conchoidal

Uneven, Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

No true cleavage

Perfect on [110]

1.7 Mohs Hardness

95-6

2 10

1.8 Chemical Composition

Al ₂ O ₃

NaNa2(Fe++4Fe+++)Si8O22(OH)2

Ruby and Arfvedsonite Chemical Formula

While comparing Ruby and Arfvedsonite 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 Ruby and Arfvedsonite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Arfvedsonite- NaNa2(Fe++4Fe+++)Si8O22(OH)2

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Ruby and Arfvedsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Arfvedsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Arfvedsonite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 3.3-3.5 whereas that of Arfvedsonite is 3.3-3.5.