1. LAzulite crystallizes in the monoclinic system

2. LAzulite has a Mohs hardness of 5.5 to 6 and a specific gravity

3. LAzulite ((Mg,Fe 2+)Al 2 (PO 4) 2 (OH) 2) is a blue, phosphate mineral containing magnesium, iron, and aluminium phosphate.LAzulite forms one endmember of a solid solution series with the darker iron rich scorzalite.