Ruby and Jacobsite Physical Properties

Ruby

Jacobsite

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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

3.97-4.054.76-5.03

1 7.18

1.5 Fracture

Conchoidal

Conchoidal, Brittle

1.6 Cleavage

No true cleavage

None

1.7 Mohs Hardness

95.5-6.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

Ruby and Jacobsite Chemical Formula

While comparing Ruby and Jacobsite 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 Jacobsite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Jacobsite- (Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

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Ruby and Jacobsite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Jacobsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Jacobsite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 4.76-5.03 whereas that of Jacobsite is 4.76-5.03.