Ludlamite and Corundum Physical Properties

Ludlamite

Corundum

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.1-3.23.90-4.05

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gems, Difficult, Fibrous

1.6 Cleavage

Vitreous, pearly on cleavage

None – parting in 3 directions

1.7 Mohs Hardness

3-49

2 10

1.8 Chemical Composition

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

Al 2O 3Arthur Thomas , Gemstones (2009)

Ludlamite and Corundum Chemical Formula

While comparing Ludlamite and Corundum 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 Ludlamite and Corundum chemical formula.

Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)

Compare Green Gemstones

Ludlamite Vs Musgravite

Ludlamite Vs Moss Agate

Ludlamite Vs Moonstone

Ludlamite and Corundum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ludlamite and Corundum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ludlamite and Corundum Optical Properties during the identification of gemstone. Specific gravity of Ludlamite is 3.90-4.05 whereas that of Corundum is 3.90-4.05.