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Sapphire
Sapphire

Jacobsite
Jacobsite



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Sapphire
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Jacobsite

Sapphire and Jacobsite Physical Properties

Physical Properties

Tenacity

-
-

Solubility

insoluble
-

Durability

-
-

Specific Gravity

3.95-4.034.76-5.03
1 7.18
👆🏻

Fracture

Uneven
Conchoidal

Cleavage

None, but may exhibit parting
None

Mohs Hardness

95.5-6.5
2 10
👆🏻

Chemical Composition

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

Sapphire and Jacobsite Chemical Formula

While comparing Sapphire 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 Sapphire and Jacobsite chemical formula.

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

Sapphire and Jacobsite Specific Gravity

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