Sapphire and Ludlamite Physical Properties

Sapphire

Ludlamite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.95-4.033.1-3.2

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

None, but may exhibit parting

Vitreous, pearly on cleavage

1.7 Mohs Hardness

93-4

2 10

1.8 Chemical Composition

Al ₂ O ₃

(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Sapphire and Ludlamite Chemical Formula

While comparing Sapphire and Ludlamite 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 Ludlamite chemical formula.

Chemical formula of Sapphire- Al ₂ O ₃
Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Sapphire and Ludlamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphire and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.