Apatite is a calcium phosphate. Often we also speak of the apatite group as this mineral can be found under three different terms: fluorapatite, which represents the term rich in F and also the most common, hydroxyapatite, which represents the term rich in OH, and chlorapatite, which represents the term rich in Cl and also the rarest. The name apatite was assigned by the German mineralogist Abraham Gottlieb Werner in 1786 and derives from the Greek verb "apatáo" "I deceive", with an allusion to the fact that this mineral has often been mistaken for other minerals due to the extremely vast range of colors in which it is possible to find it, colors ranging from yellow to electric blue.
Dimensions
Stone Height (cm): 0.7
Minimum Ring Diameter (cm): 1.7
Stone thickness 0.7
Weight (g): 0.5
Property
Chemical Formula: Ca5(PO4)3[F, OH, Cl]
Mohs scale: 5
Relative Density: 3.1-3.2
Crystal System: Hexagonal
