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Tourmaline
Tourmaline

Ludlamite
Ludlamite



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Tourmaline and Ludlamite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.85-3.35
3.1-3.2
1.5 Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
1.6 Cleavage
Indistinct
Vitreous, pearly on cleavage
1.7 Mohs Hardness
7-7.5
3-4
1.8 Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Tourmaline and Ludlamite Chemical Formula

While comparing Tourmaline 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 Tourmaline and Ludlamite chemical formula.

  • Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
  • Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Tourmaline and Ludlamite Specific Gravity

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