Lazulite and Erythrite Physical Properties
Tenacity
Not Available
Sectile
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.04-3.17
3.06
Fracture
Uneven, Uneven, Gemstones of the world (2001) More from other references
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Cleavage
{001} Indistinct, {???} Indistinct
Perfect on {010}; poor on {100} and { 1 02}.
Mohs Hardness
5.5
Not Available
Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Co3(AsO4)2•8(H2O)
Lazulite and Erythrite Chemical Formula
While comparing Lazulite and Erythrite 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 Erythrite 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 Erythrite- Co3(AsO4)2•8(H2O)
Lazulite and Erythrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Lazulite and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 3.06 whereas that of Erythrite is 3.06.