Topaz and Lazulite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.49-3.57
3.04-3.17
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven, Uneven, Gemstones of the world (2001) More from other references
Cleavage
[001] Perfect
{001} Indistinct, {???} Indistinct
Chemical Composition
Al2SiO4(F,OH)2
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Topaz and Lazulite Chemical Formula
While comparing Topaz and Lazulite 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 Topaz and Lazulite chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
- Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Topaz and Lazulite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Lazulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Lazulite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3.04-3.17 whereas that of Lazulite is 3.04-3.17.