Lazulite and Topaz Physical Properties
Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.04-3.17
3.49-3.57
Fracture
Uneven, Uneven, Gemstones of the world (2001) More from other references
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Cleavage
{001} Indistinct, {???} Indistinct
[001] Perfect
Mohs Hardness
5.5
8
Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Al2SiO4(F,OH)2
Lazulite and Topaz Chemical Formula
While comparing Lazulite and Topaz 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 Topaz 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 Topaz- Al2SiO4(F,OH)2
Lazulite and Topaz Specific Gravity
Another important criteria for qualitative analysis of gemstones is Lazulite and Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Topaz Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 3.49-3.57 whereas that of Topaz is 3.49-3.57.
