Lazulite and Tourmaline Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.04-3.17
  
2.85-3.35
  
Fracture
Uneven, Uneven, Gemstones of the world (2001) More from other references
  
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
{001} Indistinct, {???} Indistinct
  
Indistinct
  
Mohs Hardness
5.5
  
7-7.5
  
Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
  
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
  
Lazulite and Tourmaline Chemical Formula
While comparing Lazulite and Tourmaline 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 Lazulite and Tourmaline chemical formula.
- Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
- Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Lazulite and Tourmaline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Lazulite and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.